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Finding the Fourth Proportional to 308,417.66, 425,452.20 and 187,595.90

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Solution

The fourth proportional to 308,417.66, 425,452.20 and 187,595.90 is: 258,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,417.66 : 425,452.20 = 187,595.90 : x
  2. Step 2: Convert to fraction form
    308,417.66/425,452.20 = 187,595.90/x
  3. Step 3: Cross multiply
    308,417.66x = 425,452.20 × 187,595.90
  4. Step 4: Simplify right side
    308,417.66x = 79,813,088,365.98
  5. Step 5: Solve for x
    x = 79,813,088,365.98/308,417.66
  6. Step 6: Final answer
    x = 258,782.48

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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.