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Finding the Fourth Proportional to 401,454.57, 554,014.86 and 220,155.66

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Solution

The fourth proportional to 401,454.57, 554,014.86 and 220,155.66 is: 303,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,454.57 : 554,014.86 = 220,155.66 : x
  2. Step 2: Convert to fraction form
    401,454.57/554,014.86 = 220,155.66/x
  3. Step 3: Cross multiply
    401,454.57x = 554,014.86 × 220,155.66
  4. Step 4: Simplify right side
    401,454.57x = 121,969,506,327.52
  5. Step 5: Solve for x
    x = 121,969,506,327.52/401,454.57
  6. Step 6: Final answer
    x = 303,818.95

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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.