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Finding the Fourth Proportional to 285,627.36, 428,291.28 and 98,594.40

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Solution

The fourth proportional to 285,627.36, 428,291.28 and 98,594.40 is: 147,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,627.36 : 428,291.28 = 98,594.40 : x
  2. Step 2: Convert to fraction form
    285,627.36/428,291.28 = 98,594.40/x
  3. Step 3: Cross multiply
    285,627.36x = 428,291.28 × 98,594.40
  4. Step 4: Simplify right side
    285,627.36x = 42,227,121,776.83
  5. Step 5: Solve for x
    x = 42,227,121,776.83/285,627.36
  6. Step 6: Final answer
    x = 147,839.91

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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.