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Finding the Fourth Proportional to 361,473.40, 542,215.58 and 136,937.80

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Solution

The fourth proportional to 361,473.40, 542,215.58 and 136,937.80 is: 205,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,473.40 : 542,215.58 = 136,937.80 : x
  2. Step 2: Convert to fraction form
    361,473.40/542,215.58 = 136,937.80/x
  3. Step 3: Cross multiply
    361,473.40x = 542,215.58 × 136,937.80
  4. Step 4: Simplify right side
    361,473.40x = 74,249,808,650.92
  5. Step 5: Solve for x
    x = 74,249,808,650.92/361,473.40
  6. Step 6: Final answer
    x = 205,408.78

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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.