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Finding the Fourth Proportional to 243,040.80, 364,561.20 and 154,394.40

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Solution

The fourth proportional to 243,040.80, 364,561.20 and 154,394.40 is: 231,591.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,040.80 : 364,561.20 = 154,394.40 : x
  2. Step 2: Convert to fraction form
    243,040.80/364,561.20 = 154,394.40/x
  3. Step 3: Cross multiply
    243,040.80x = 364,561.20 × 154,394.40
  4. Step 4: Simplify right side
    243,040.80x = 56,286,207,737.28
  5. Step 5: Solve for x
    x = 56,286,207,737.28/243,040.80
  6. Step 6: Final answer
    x = 231,591.60

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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.