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Finding the Fourth Proportional to 402,468.35, 603,702.53 and 215,844.35

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Solution

The fourth proportional to 402,468.35, 603,702.53 and 215,844.35 is: 323,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,468.35 : 603,702.53 = 215,844.35 : x
  2. Step 2: Convert to fraction form
    402,468.35/603,702.53 = 215,844.35/x
  3. Step 3: Cross multiply
    402,468.35x = 603,702.53 × 215,844.35
  4. Step 4: Simplify right side
    402,468.35x = 130,305,779,101.98
  5. Step 5: Solve for x
    x = 130,305,779,101.98/402,468.35
  6. Step 6: Final answer
    x = 323,766.53

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Similar ratio
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1.5x scale

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.