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Finding the Fourth Proportional to 366,868.80, 506,308.80 and 215,995.20

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Solution

The fourth proportional to 366,868.80, 506,308.80 and 215,995.20 is: 298,090.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,868.80 : 506,308.80 = 215,995.20 : x
  2. Step 2: Convert to fraction form
    366,868.80/506,308.80 = 215,995.20/x
  3. Step 3: Cross multiply
    366,868.80x = 506,308.80 × 215,995.20
  4. Step 4: Simplify right side
    366,868.80x = 109,360,270,517.76
  5. Step 5: Solve for x
    x = 109,360,270,517.76/366,868.80
  6. Step 6: Final answer
    x = 298,090.95

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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.