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Finding the Fourth Proportional to 243,000.60, 364,500.90 and 85,208.55

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Solution

The fourth proportional to 243,000.60, 364,500.90 and 85,208.55 is: 127,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,000.60 : 364,500.90 = 85,208.55 : x
  2. Step 2: Convert to fraction form
    243,000.60/364,500.90 = 85,208.55/x
  3. Step 3: Cross multiply
    243,000.60x = 364,500.90 × 85,208.55
  4. Step 4: Simplify right side
    243,000.60x = 31,058,593,162.70
  5. Step 5: Solve for x
    x = 31,058,593,162.70/243,000.60
  6. Step 6: Final answer
    x = 127,812.83

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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.