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Finding the Fourth Proportional to 291,337.90, 408,702.50 and 291,337.90

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Solution

The fourth proportional to 291,337.90, 408,702.50 and 291,337.90 is: 408,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,337.90 : 408,702.50 = 291,337.90 : x
  2. Step 2: Convert to fraction form
    291,337.90/408,702.50 = 291,337.90/x
  3. Step 3: Cross multiply
    291,337.90x = 408,702.50 × 291,337.90
  4. Step 4: Simplify right side
    291,337.90x = 119,070,528,074.75
  5. Step 5: Solve for x
    x = 119,070,528,074.75/291,337.90
  6. Step 6: Final answer
    x = 408,702.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.