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Finding the Fourth Proportional to 308,156.79, 425,387.31 and 187,336.65

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Solution

The fourth proportional to 308,156.79, 425,387.31 and 187,336.65 is: 258,604.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,156.79 : 425,387.31 = 187,336.65 : x
  2. Step 2: Convert to fraction form
    308,156.79/425,387.31 = 187,336.65/x
  3. Step 3: Cross multiply
    308,156.79x = 425,387.31 × 187,336.65
  4. Step 4: Simplify right side
    308,156.79x = 79,690,633,607.91
  5. Step 5: Solve for x
    x = 79,690,633,607.91/308,156.79
  6. Step 6: Final answer
    x = 258,604.18

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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.