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Finding the Fourth Proportional to 243,326.72, 364,990.56 and 77,114.24

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Solution

The fourth proportional to 243,326.72, 364,990.56 and 77,114.24 is: 115,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,326.72 : 364,990.56 = 77,114.24 : x
  2. Step 2: Convert to fraction form
    243,326.72/364,990.56 = 77,114.24/x
  3. Step 3: Cross multiply
    243,326.72x = 364,990.56 × 77,114.24
  4. Step 4: Simplify right side
    243,326.72x = 28,145,969,641.57
  5. Step 5: Solve for x
    x = 28,145,969,641.57/243,326.72
  6. Step 6: Final answer
    x = 115,671.51

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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.