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Finding the Fourth Proportional to 281,537.40, 388,519.68 and 152,472.90

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Solution

The fourth proportional to 281,537.40, 388,519.68 and 152,472.90 is: 210,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,537.40 : 388,519.68 = 152,472.90 : x
  2. Step 2: Convert to fraction form
    281,537.40/388,519.68 = 152,472.90/x
  3. Step 3: Cross multiply
    281,537.40x = 388,519.68 × 152,472.90
  4. Step 4: Simplify right side
    281,537.40x = 59,238,722,316.67
  5. Step 5: Solve for x
    x = 59,238,722,316.67/281,537.40
  6. Step 6: Final answer
    x = 210,411.56

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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.