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Finding the Fourth Proportional to 395,557.16, 545,758.14 and 248,397.89

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Solution

The fourth proportional to 395,557.16, 545,758.14 and 248,397.89 is: 342,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,557.16 : 545,758.14 = 248,397.89 : x
  2. Step 2: Convert to fraction form
    395,557.16/545,758.14 = 248,397.89/x
  3. Step 3: Cross multiply
    395,557.16x = 545,758.14 × 248,397.89
  4. Step 4: Simplify right side
    395,557.16x = 135,565,170,301.68
  5. Step 5: Solve for x
    x = 135,565,170,301.68/395,557.16
  6. Step 6: Final answer
    x = 342,719.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.