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Finding the Fourth Proportional to 532,728.74, 735,188.01 and 306,374.42

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Solution

The fourth proportional to 532,728.74, 735,188.01 and 306,374.42 is: 422,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,728.74 : 735,188.01 = 306,374.42 : x
  2. Step 2: Convert to fraction form
    532,728.74/735,188.01 = 306,374.42/x
  3. Step 3: Cross multiply
    532,728.74x = 735,188.01 × 306,374.42
  4. Step 4: Simplify right side
    532,728.74x = 225,242,800,154.70
  5. Step 5: Solve for x
    x = 225,242,800,154.70/532,728.74
  6. Step 6: Final answer
    x = 422,809.55

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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.