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Finding the Fourth Proportional to 656,876.39, 985,312.76 and 158,240.39

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Solution

The fourth proportional to 656,876.39, 985,312.76 and 158,240.39 is: 237,360.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,876.39 : 985,312.76 = 158,240.39 : x
  2. Step 2: Convert to fraction form
    656,876.39/985,312.76 = 158,240.39/x
  3. Step 3: Cross multiply
    656,876.39x = 985,312.76 × 158,240.39
  4. Step 4: Simplify right side
    656,876.39x = 155,916,269,696.61
  5. Step 5: Solve for x
    x = 155,916,269,696.61/656,876.39
  6. Step 6: Final answer
    x = 237,360.14

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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.