Home / 401,778.20-602,689.17-121,288.16

Finding the Fourth Proportional to 401,778.20, 602,689.17 and 121,288.16

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Solution

The fourth proportional to 401,778.20, 602,689.17 and 121,288.16 is: 181,938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,778.20 : 602,689.17 = 121,288.16 : x
  2. Step 2: Convert to fraction form
    401,778.20/602,689.17 = 121,288.16/x
  3. Step 3: Cross multiply
    401,778.20x = 602,689.17 × 121,288.16
  4. Step 4: Simplify right side
    401,778.20x = 73,099,060,481.23
  5. Step 5: Solve for x
    x = 73,099,060,481.23/401,778.20
  6. Step 6: Final answer
    x = 181,938.84

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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.