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Finding the Fourth Proportional to 565,335.18, 780,192.41 and 320,367.39

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Solution

The fourth proportional to 565,335.18, 780,192.41 and 320,367.39 is: 442,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,335.18 : 780,192.41 = 320,367.39 : x
  2. Step 2: Convert to fraction form
    565,335.18/780,192.41 = 320,367.39/x
  3. Step 3: Cross multiply
    565,335.18x = 780,192.41 × 320,367.39
  4. Step 4: Simplify right side
    565,335.18x = 249,948,204,139.03
  5. Step 5: Solve for x
    x = 249,948,204,139.03/565,335.18
  6. Step 6: Final answer
    x = 442,123.91

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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.