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Finding the Fourth Proportional to 402,034.79, 554,815.71 and 220,765.30

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Solution

The fourth proportional to 402,034.79, 554,815.71 and 220,765.30 is: 304,660.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,034.79 : 554,815.71 = 220,765.30 : x
  2. Step 2: Convert to fraction form
    402,034.79/554,815.71 = 220,765.30/x
  3. Step 3: Cross multiply
    402,034.79x = 554,815.71 × 220,765.30
  4. Step 4: Simplify right side
    402,034.79x = 122,484,055,275.82
  5. Step 5: Solve for x
    x = 122,484,055,275.82/402,034.79
  6. Step 6: Final answer
    x = 304,660.34

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1.5x scale

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.