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Finding the Fourth Proportional to 461,333.70, 692,000.55 and 128,909.70

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Solution

The fourth proportional to 461,333.70, 692,000.55 and 128,909.70 is: 193,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,333.70 : 692,000.55 = 128,909.70 : x
  2. Step 2: Convert to fraction form
    461,333.70/692,000.55 = 128,909.70/x
  3. Step 3: Cross multiply
    461,333.70x = 692,000.55 × 128,909.70
  4. Step 4: Simplify right side
    461,333.70x = 89,205,583,300.34
  5. Step 5: Solve for x
    x = 89,205,583,300.34/461,333.70
  6. Step 6: Final answer
    x = 193,364.55

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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.