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Finding the Fourth Proportional to 426,523.95, 640,278.01 and 216,604.76

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Solution

The fourth proportional to 426,523.95, 640,278.01 and 216,604.76 is: 325,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,523.95 : 640,278.01 = 216,604.76 : x
  2. Step 2: Convert to fraction form
    426,523.95/640,278.01 = 216,604.76/x
  3. Step 3: Cross multiply
    426,523.95x = 640,278.01 × 216,604.76
  4. Step 4: Simplify right side
    426,523.95x = 138,687,264,689.33
  5. Step 5: Solve for x
    x = 138,687,264,689.33/426,523.95
  6. Step 6: Final answer
    x = 325,157.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.