Home / 257,701,672.75-386,613,034.35-85,178,467.79

Finding the Fourth Proportional to 257,701,672.75, 386,613,034.35 and 85,178,467.79

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Solution

The fourth proportional to 257,701,672.75, 386,613,034.35 and 85,178,467.79 is: 127,787,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,701,672.75 : 386,613,034.35 = 85,178,467.79 : x
  2. Step 2: Convert to fraction form
    257,701,672.75/386,613,034.35 = 85,178,467.79/x
  3. Step 3: Cross multiply
    257,701,672.75x = 386,613,034.35 × 85,178,467.79
  4. Step 4: Simplify right side
    257,701,672.75x = 32,931,105,891,216,684
  5. Step 5: Solve for x
    x = 32,931,105,891,216,684/257,701,672.75
  6. Step 6: Final answer
    x = 127,787,707.16

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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.