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Finding the Fourth Proportional to 356,739.80, 535,368.90 and 146,528.60

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Solution

The fourth proportional to 356,739.80, 535,368.90 and 146,528.60 is: 219,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,739.80 : 535,368.90 = 146,528.60 : x
  2. Step 2: Convert to fraction form
    356,739.80/535,368.90 = 146,528.60/x
  3. Step 3: Cross multiply
    356,739.80x = 535,368.90 × 146,528.60
  4. Step 4: Simplify right side
    356,739.80x = 78,446,855,400.54
  5. Step 5: Solve for x
    x = 78,446,855,400.54/356,739.80
  6. Step 6: Final answer
    x = 219,899.36

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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.