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Finding the Fourth Proportional to 402,561.60, 603,842.01 and 103,041.70

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Solution

The fourth proportional to 402,561.60, 603,842.01 and 103,041.70 is: 154,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,561.60 : 603,842.01 = 103,041.70 : x
  2. Step 2: Convert to fraction form
    402,561.60/603,842.01 = 103,041.70/x
  3. Step 3: Cross multiply
    402,561.60x = 603,842.01 × 103,041.70
  4. Step 4: Simplify right side
    402,561.60x = 62,220,905,732.21
  5. Step 5: Solve for x
    x = 62,220,905,732.21/402,561.60
  6. Step 6: Final answer
    x = 154,562.45

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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.