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Finding the Fourth Proportional to 287,248.60, 430,872.90 and 74,016.10

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Solution

The fourth proportional to 287,248.60, 430,872.90 and 74,016.10 is: 111,024.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,248.60 : 430,872.90 = 74,016.10 : x
  2. Step 2: Convert to fraction form
    287,248.60/430,872.90 = 74,016.10/x
  3. Step 3: Cross multiply
    287,248.60x = 430,872.90 × 74,016.10
  4. Step 4: Simplify right side
    287,248.60x = 31,891,531,653.69
  5. Step 5: Solve for x
    x = 31,891,531,653.69/287,248.60
  6. Step 6: Final answer
    x = 111,024.15

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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.