Home / 345,461.14-518,262.45-145,781.56

Finding the Fourth Proportional to 345,461.14, 518,262.45 and 145,781.56

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Solution

The fourth proportional to 345,461.14, 518,262.45 and 145,781.56 is: 218,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,461.14 : 518,262.45 = 145,781.56 : x
  2. Step 2: Convert to fraction form
    345,461.14/518,262.45 = 145,781.56/x
  3. Step 3: Cross multiply
    345,461.14x = 518,262.45 × 145,781.56
  4. Step 4: Simplify right side
    345,461.14x = 75,553,108,450.42
  5. Step 5: Solve for x
    x = 75,553,108,450.42/345,461.14
  6. Step 6: Final answer
    x = 218,702.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.