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Finding the Fourth Proportional to 242,861.20, 364,291.80 and 172,002.40

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Solution

The fourth proportional to 242,861.20, 364,291.80 and 172,002.40 is: 258,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,861.20 : 364,291.80 = 172,002.40 : x
  2. Step 2: Convert to fraction form
    242,861.20/364,291.80 = 172,002.40/x
  3. Step 3: Cross multiply
    242,861.20x = 364,291.80 × 172,002.40
  4. Step 4: Simplify right side
    242,861.20x = 62,659,063,900.32
  5. Step 5: Solve for x
    x = 62,659,063,900.32/242,861.20
  6. Step 6: Final answer
    x = 258,003.60

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1.5x scale

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.