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Finding the Fourth Proportional to 356,799.80, 534,422.10 and 317,401.40

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Solution

The fourth proportional to 356,799.80, 534,422.10 and 317,401.40 is: 475,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,799.80 : 534,422.10 = 317,401.40 : x
  2. Step 2: Convert to fraction form
    356,799.80/534,422.10 = 317,401.40/x
  3. Step 3: Cross multiply
    356,799.80x = 534,422.10 × 317,401.40
  4. Step 4: Simplify right side
    356,799.80x = 169,626,322,730.94
  5. Step 5: Solve for x
    x = 169,626,322,730.94/356,799.80
  6. Step 6: Final answer
    x = 475,410.36

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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.