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Finding the Fourth Proportional to 243,574.85, 365,354.04 and 85,799.18

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Solution

The fourth proportional to 243,574.85, 365,354.04 and 85,799.18 is: 128,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,574.85 : 365,354.04 = 85,799.18 : x
  2. Step 2: Convert to fraction form
    243,574.85/365,354.04 = 85,799.18/x
  3. Step 3: Cross multiply
    243,574.85x = 365,354.04 × 85,799.18
  4. Step 4: Simplify right side
    243,574.85x = 31,347,077,041.69
  5. Step 5: Solve for x
    x = 31,347,077,041.69/243,574.85
  6. Step 6: Final answer
    x = 128,695.87

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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.