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Finding the Fourth Proportional to 361,897.10, 542,845.65 and 162,005.30

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Solution

The fourth proportional to 361,897.10, 542,845.65 and 162,005.30 is: 243,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,897.10 : 542,845.65 = 162,005.30 : x
  2. Step 2: Convert to fraction form
    361,897.10/542,845.65 = 162,005.30/x
  3. Step 3: Cross multiply
    361,897.10x = 542,845.65 × 162,005.30
  4. Step 4: Simplify right side
    361,897.10x = 87,943,872,381.95
  5. Step 5: Solve for x
    x = 87,943,872,381.95/361,897.10
  6. Step 6: Final answer
    x = 243,007.95

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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.