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Finding the Fourth Proportional to 320,111.80, 479,535.90 and 162,453.40

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Solution

The fourth proportional to 320,111.80, 479,535.90 and 162,453.40 is: 243,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,111.80 : 479,535.90 = 162,453.40 : x
  2. Step 2: Convert to fraction form
    320,111.80/479,535.90 = 162,453.40/x
  3. Step 3: Cross multiply
    320,111.80x = 479,535.90 × 162,453.40
  4. Step 4: Simplify right side
    320,111.80x = 77,902,237,377.06
  5. Step 5: Solve for x
    x = 77,902,237,377.06/320,111.80
  6. Step 6: Final answer
    x = 243,359.47

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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.