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Finding the Fourth Proportional to 243,235.71, 364,853.57 and 77,010.75

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Solution

The fourth proportional to 243,235.71, 364,853.57 and 77,010.75 is: 115,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,235.71 : 364,853.57 = 77,010.75 : x
  2. Step 2: Convert to fraction form
    243,235.71/364,853.57 = 77,010.75/x
  3. Step 3: Cross multiply
    243,235.71x = 364,853.57 × 77,010.75
  4. Step 4: Simplify right side
    243,235.71x = 28,097,646,680.82
  5. Step 5: Solve for x
    x = 28,097,646,680.82/243,235.71
  6. Step 6: Final answer
    x = 115,516.13

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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.