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Finding the Fourth Proportional to 285,691.86, 428,533.02 and 69,552.87

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Solution

The fourth proportional to 285,691.86, 428,533.02 and 69,552.87 is: 104,328.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,691.86 : 428,533.02 = 69,552.87 : x
  2. Step 2: Convert to fraction form
    285,691.86/428,533.02 = 69,552.87/x
  3. Step 3: Cross multiply
    285,691.86x = 428,533.02 × 69,552.87
  4. Step 4: Simplify right side
    285,691.86x = 29,805,701,430.77
  5. Step 5: Solve for x
    x = 29,805,701,430.77/285,691.86
  6. Step 6: Final answer
    x = 104,328.14

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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.