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Finding the Fourth Proportional to 308,177.46, 425,333.70 and 187,356.60

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Solution

The fourth proportional to 308,177.46, 425,333.70 and 187,356.60 is: 258,581.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,177.46 : 425,333.70 = 187,356.60 : x
  2. Step 2: Convert to fraction form
    308,177.46/425,333.70 = 187,356.60/x
  3. Step 3: Cross multiply
    308,177.46x = 425,333.70 × 187,356.60
  4. Step 4: Simplify right side
    308,177.46x = 79,689,075,897.42
  5. Step 5: Solve for x
    x = 79,689,075,897.42/308,177.46
  6. Step 6: Final answer
    x = 258,581.78

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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.