Home / 353,376,007.80-530,064,011.70-200,320,999.80

Finding the Fourth Proportional to 353,376,007.80, 530,064,011.70 and 200,320,999.80

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Solution

The fourth proportional to 353,376,007.80, 530,064,011.70 and 200,320,999.80 is: 300,481,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,376,007.80 : 530,064,011.70 = 200,320,999.80 : x
  2. Step 2: Convert to fraction form
    353,376,007.80/530,064,011.70 = 200,320,999.80/x
  3. Step 3: Cross multiply
    353,376,007.80x = 530,064,011.70 × 200,320,999.80
  4. Step 4: Simplify right side
    353,376,007.80x = 106,182,952,781,742,896
  5. Step 5: Solve for x
    x = 106,182,952,781,742,896/353,376,007.80
  6. Step 6: Final answer
    x = 300,481,499.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.