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Finding the Fourth Proportional to 538,415.40, 807,477.30 and 159,335.40

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Solution

The fourth proportional to 538,415.40, 807,477.30 and 159,335.40 is: 238,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,415.40 : 807,477.30 = 159,335.40 : x
  2. Step 2: Convert to fraction form
    538,415.40/807,477.30 = 159,335.40/x
  3. Step 3: Cross multiply
    538,415.40x = 807,477.30 × 159,335.40
  4. Step 4: Simplify right side
    538,415.40x = 128,659,718,586.42
  5. Step 5: Solve for x
    x = 128,659,718,586.42/538,415.40
  6. Step 6: Final answer
    x = 238,959.95

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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.