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Finding the Fourth Proportional to 315,167.61, 434,951.87 and 179,214.21

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Solution

The fourth proportional to 315,167.61, 434,951.87 and 179,214.21 is: 247,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,167.61 : 434,951.87 = 179,214.21 : x
  2. Step 2: Convert to fraction form
    315,167.61/434,951.87 = 179,214.21/x
  3. Step 3: Cross multiply
    315,167.61x = 434,951.87 × 179,214.21
  4. Step 4: Simplify right side
    315,167.61x = 77,949,554,874.00
  5. Step 5: Solve for x
    x = 77,949,554,874.00/315,167.61
  6. Step 6: Final answer
    x = 247,327.30

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1.5x scale

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.