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Finding the Fourth Proportional to 521,842.50, 720,142.65 and 295,531.74

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Solution

The fourth proportional to 521,842.50, 720,142.65 and 295,531.74 is: 407,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,842.50 : 720,142.65 = 295,531.74 : x
  2. Step 2: Convert to fraction form
    521,842.50/720,142.65 = 295,531.74/x
  3. Step 3: Cross multiply
    521,842.50x = 720,142.65 × 295,531.74
  4. Step 4: Simplify right side
    521,842.50x = 212,825,010,402.71
  5. Step 5: Solve for x
    x = 212,825,010,402.71/521,842.50
  6. Step 6: Final answer
    x = 407,833.80

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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.