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Finding the Fourth Proportional to 474,616.39, 655,159.58 and 311,335.03

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Solution

The fourth proportional to 474,616.39, 655,159.58 and 311,335.03 is: 429,766.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,616.39 : 655,159.58 = 311,335.03 : x
  2. Step 2: Convert to fraction form
    474,616.39/655,159.58 = 311,335.03/x
  3. Step 3: Cross multiply
    474,616.39x = 655,159.58 × 311,335.03
  4. Step 4: Simplify right side
    474,616.39x = 203,974,127,494.09
  5. Step 5: Solve for x
    x = 203,974,127,494.09/474,616.39
  6. Step 6: Final answer
    x = 429,766.30

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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.