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Finding the Fourth Proportional to 519,306.88, 716,645.65 and 280,842.88

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Solution

The fourth proportional to 519,306.88, 716,645.65 and 280,842.88 is: 387,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,306.88 : 716,645.65 = 280,842.88 : x
  2. Step 2: Convert to fraction form
    519,306.88/716,645.65 = 280,842.88/x
  3. Step 3: Cross multiply
    519,306.88x = 716,645.65 × 280,842.88
  4. Step 4: Simplify right side
    519,306.88x = 201,264,828,285.47
  5. Step 5: Solve for x
    x = 201,264,828,285.47/519,306.88
  6. Step 6: Final answer
    x = 387,564.34

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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.