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Finding the Fourth Proportional to 361,430.10, 542,150.82 and 136,895.67

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Solution

The fourth proportional to 361,430.10, 542,150.82 and 136,895.67 is: 205,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,430.10 : 542,150.82 = 136,895.67 : x
  2. Step 2: Convert to fraction form
    361,430.10/542,150.82 = 136,895.67/x
  3. Step 3: Cross multiply
    361,430.10x = 542,150.82 × 136,895.67
  4. Step 4: Simplify right side
    361,430.10x = 74,218,099,744.95
  5. Step 5: Solve for x
    x = 74,218,099,744.95/361,430.10
  6. Step 6: Final answer
    x = 205,345.65

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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.