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Finding the Fourth Proportional to 646,777.80, 970,166.70 and 203,545.80

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Solution

The fourth proportional to 646,777.80, 970,166.70 and 203,545.80 is: 305,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,777.80 : 970,166.70 = 203,545.80 : x
  2. Step 2: Convert to fraction form
    646,777.80/970,166.70 = 203,545.80/x
  3. Step 3: Cross multiply
    646,777.80x = 970,166.70 × 203,545.80
  4. Step 4: Simplify right side
    646,777.80x = 197,473,357,084.86
  5. Step 5: Solve for x
    x = 197,473,357,084.86/646,777.80
  6. Step 6: Final answer
    x = 305,318.70

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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.