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Finding the Fourth Proportional to 387,350.50, 534,570.96 and 217,584.76

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Solution

The fourth proportional to 387,350.50, 534,570.96 and 217,584.76 is: 300,282.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,350.50 : 534,570.96 = 217,584.76 : x
  2. Step 2: Convert to fraction form
    387,350.50/534,570.96 = 217,584.76/x
  3. Step 3: Cross multiply
    387,350.50x = 534,570.96 × 217,584.76
  4. Step 4: Simplify right side
    387,350.50x = 116,314,494,034.57
  5. Step 5: Solve for x
    x = 116,314,494,034.57/387,350.50
  6. Step 6: Final answer
    x = 300,282.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.