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Finding the Fourth Proportional to 439,892.50, 607,051.65 and 238,688.50

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Solution

The fourth proportional to 439,892.50, 607,051.65 and 238,688.50 is: 329,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,892.50 : 607,051.65 = 238,688.50 : x
  2. Step 2: Convert to fraction form
    439,892.50/607,051.65 = 238,688.50/x
  3. Step 3: Cross multiply
    439,892.50x = 607,051.65 × 238,688.50
  4. Step 4: Simplify right side
    439,892.50x = 144,896,247,761.03
  5. Step 5: Solve for x
    x = 144,896,247,761.03/439,892.50
  6. Step 6: Final answer
    x = 329,390.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.