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Finding the Fourth Proportional to 500,535.78, 750,876.87 and 145,503.66

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Solution

The fourth proportional to 500,535.78, 750,876.87 and 145,503.66 is: 218,276.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,535.78 : 750,876.87 = 145,503.66 : x
  2. Step 2: Convert to fraction form
    500,535.78/750,876.87 = 145,503.66/x
  3. Step 3: Cross multiply
    500,535.78x = 750,876.87 × 145,503.66
  4. Step 4: Simplify right side
    500,535.78x = 109,255,332,794.34
  5. Step 5: Solve for x
    x = 109,255,332,794.34/500,535.78
  6. Step 6: Final answer
    x = 218,276.77

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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.