Home / 390,927.22-539,449.76-218,805.76

Finding the Fourth Proportional to 390,927.22, 539,449.76 and 218,805.76

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Solution

The fourth proportional to 390,927.22, 539,449.76 and 218,805.76 is: 301,935.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,927.22 : 539,449.76 = 218,805.76 : x
  2. Step 2: Convert to fraction form
    390,927.22/539,449.76 = 218,805.76/x
  3. Step 3: Cross multiply
    390,927.22x = 539,449.76 × 218,805.76
  4. Step 4: Simplify right side
    390,927.22x = 118,034,714,718.62
  5. Step 5: Solve for x
    x = 118,034,714,718.62/390,927.22
  6. Step 6: Final answer
    x = 301,935.27

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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.