Home / 210,428,568.90-315,613,181.16-72,251,989.74

Finding the Fourth Proportional to 210,428,568.90, 315,613,181.16 and 72,251,989.74

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Solution

The fourth proportional to 210,428,568.90, 315,613,181.16 and 72,251,989.74 is: 108,367,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,428,568.90 : 315,613,181.16 = 72,251,989.74 : x
  2. Step 2: Convert to fraction form
    210,428,568.90/315,613,181.16 = 72,251,989.74/x
  3. Step 3: Cross multiply
    210,428,568.90x = 315,613,181.16 × 72,251,989.74
  4. Step 4: Simplify right side
    210,428,568.90x = 22,803,680,326,981,080
  5. Step 5: Solve for x
    x = 22,803,680,326,981,080/210,428,568.90
  6. Step 6: Final answer
    x = 108,367,796.47

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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.