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Finding the Fourth Proportional to 353,459.80, 487,694.46 and 258,018.52

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Solution

The fourth proportional to 353,459.80, 487,694.46 and 258,018.52 is: 356,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,459.80 : 487,694.46 = 258,018.52 : x
  2. Step 2: Convert to fraction form
    353,459.80/487,694.46 = 258,018.52/x
  3. Step 3: Cross multiply
    353,459.80x = 487,694.46 × 258,018.52
  4. Step 4: Simplify right side
    353,459.80x = 125,834,202,781.40
  5. Step 5: Solve for x
    x = 125,834,202,781.40/353,459.80
  6. Step 6: Final answer
    x = 356,007.11

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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.