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Finding the Fourth Proportional to 402,561.79, 603,842.29 and 103,041.89

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Solution

The fourth proportional to 402,561.79, 603,842.29 and 103,041.89 is: 154,562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,561.79 : 603,842.29 = 103,041.89 : x
  2. Step 2: Convert to fraction form
    402,561.79/603,842.29 = 103,041.89/x
  3. Step 3: Cross multiply
    402,561.79x = 603,842.29 × 103,041.89
  4. Step 4: Simplify right side
    402,561.79x = 62,221,050,390.73
  5. Step 5: Solve for x
    x = 62,221,050,390.73/402,561.79
  6. Step 6: Final answer
    x = 154,562.73

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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.