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Finding the Fourth Proportional to 287,246.52, 430,934.40 and 87,587.10

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Solution

The fourth proportional to 287,246.52, 430,934.40 and 87,587.10 is: 131,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,246.52 : 430,934.40 = 87,587.10 : x
  2. Step 2: Convert to fraction form
    287,246.52/430,934.40 = 87,587.10/x
  3. Step 3: Cross multiply
    287,246.52x = 430,934.40 × 87,587.10
  4. Step 4: Simplify right side
    287,246.52x = 37,744,294,386.24
  5. Step 5: Solve for x
    x = 37,744,294,386.24/287,246.52
  6. Step 6: Final answer
    x = 131,400.35

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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.