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Finding the Fourth Proportional to 346,862.60, 520,082.70 and 136,248.20

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Solution

The fourth proportional to 346,862.60, 520,082.70 and 136,248.20 is: 204,289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,862.60 : 520,082.70 = 136,248.20 : x
  2. Step 2: Convert to fraction form
    346,862.60/520,082.70 = 136,248.20/x
  3. Step 3: Cross multiply
    346,862.60x = 520,082.70 × 136,248.20
  4. Step 4: Simplify right side
    346,862.60x = 70,860,331,726.14
  5. Step 5: Solve for x
    x = 70,860,331,726.14/346,862.60
  6. Step 6: Final answer
    x = 204,289.34

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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.