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Finding the Fourth Proportional to 369,998.74, 510,543.52 and 216,979.20

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Solution

The fourth proportional to 369,998.74, 510,543.52 and 216,979.20 is: 299,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,998.74 : 510,543.52 = 216,979.20 : x
  2. Step 2: Convert to fraction form
    369,998.74/510,543.52 = 216,979.20/x
  3. Step 3: Cross multiply
    369,998.74x = 510,543.52 × 216,979.20
  4. Step 4: Simplify right side
    369,998.74x = 110,777,324,534.78
  5. Step 5: Solve for x
    x = 110,777,324,534.78/369,998.74
  6. Step 6: Final answer
    x = 299,399.19

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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.