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Finding the Fourth Proportional to 347,539.20, 521,308.80 and 147,866.10

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Solution

The fourth proportional to 347,539.20, 521,308.80 and 147,866.10 is: 221,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,539.20 : 521,308.80 = 147,866.10 : x
  2. Step 2: Convert to fraction form
    347,539.20/521,308.80 = 147,866.10/x
  3. Step 3: Cross multiply
    347,539.20x = 521,308.80 × 147,866.10
  4. Step 4: Simplify right side
    347,539.20x = 77,083,899,151.68
  5. Step 5: Solve for x
    x = 77,083,899,151.68/347,539.20
  6. Step 6: Final answer
    x = 221,799.15

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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.