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Finding the Fourth Proportional to 307,543.30, 461,314.95 and 85,927.30

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Solution

The fourth proportional to 307,543.30, 461,314.95 and 85,927.30 is: 128,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,543.30 : 461,314.95 = 85,927.30 : x
  2. Step 2: Convert to fraction form
    307,543.30/461,314.95 = 85,927.30/x
  3. Step 3: Cross multiply
    307,543.30x = 461,314.95 × 85,927.30
  4. Step 4: Simplify right side
    307,543.30x = 39,639,548,103.14
  5. Step 5: Solve for x
    x = 39,639,548,103.14/307,543.30
  6. Step 6: Final answer
    x = 128,890.95

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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.