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Finding the Fourth Proportional to 370,234.95, 555,242.36 and 156,999.72

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Solution

The fourth proportional to 370,234.95, 555,242.36 and 156,999.72 is: 235,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,234.95 : 555,242.36 = 156,999.72 : x
  2. Step 2: Convert to fraction form
    370,234.95/555,242.36 = 156,999.72/x
  3. Step 3: Cross multiply
    370,234.95x = 555,242.36 × 156,999.72
  4. Step 4: Simplify right side
    370,234.95x = 87,172,894,267.14
  5. Step 5: Solve for x
    x = 87,172,894,267.14/370,234.95
  6. Step 6: Final answer
    x = 235,452.90

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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.