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Finding the Fourth Proportional to 538,407.40, 807,465.30 and 159,327.40

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Solution

The fourth proportional to 538,407.40, 807,465.30 and 159,327.40 is: 238,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,407.40 : 807,465.30 = 159,327.40 : x
  2. Step 2: Convert to fraction form
    538,407.40/807,465.30 = 159,327.40/x
  3. Step 3: Cross multiply
    538,407.40x = 807,465.30 × 159,327.40
  4. Step 4: Simplify right side
    538,407.40x = 128,651,346,839.22
  5. Step 5: Solve for x
    x = 128,651,346,839.22/538,407.40
  6. Step 6: Final answer
    x = 238,947.95

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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.