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Finding the Fourth Proportional to 401,321.16, 553,820.76 and 220,040.76

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Solution

The fourth proportional to 401,321.16, 553,820.76 and 220,040.76 is: 303,654.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,321.16 : 553,820.76 = 220,040.76 : x
  2. Step 2: Convert to fraction form
    401,321.16/553,820.76 = 220,040.76/x
  3. Step 3: Cross multiply
    401,321.16x = 553,820.76 × 220,040.76
  4. Step 4: Simplify right side
    401,321.16x = 121,863,140,934.18
  5. Step 5: Solve for x
    x = 121,863,140,934.18/401,321.16
  6. Step 6: Final answer
    x = 303,654.91

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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.