Home / 390,344.08-538,613.60-227,036.72

Finding the Fourth Proportional to 390,344.08, 538,613.60 and 227,036.72

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Solution

The fourth proportional to 390,344.08, 538,613.60 and 227,036.72 is: 313,275.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,344.08 : 538,613.60 = 227,036.72 : x
  2. Step 2: Convert to fraction form
    390,344.08/538,613.60 = 227,036.72/x
  3. Step 3: Cross multiply
    390,344.08x = 538,613.60 × 227,036.72
  4. Step 4: Simplify right side
    390,344.08x = 122,285,065,091.39
  5. Step 5: Solve for x
    x = 122,285,065,091.39/390,344.08
  6. Step 6: Final answer
    x = 313,275.06

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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.