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Finding the Fourth Proportional to 538,326.40, 807,343.80 and 159,246.40

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Solution

The fourth proportional to 538,326.40, 807,343.80 and 159,246.40 is: 238,826.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,326.40 : 807,343.80 = 159,246.40 : x
  2. Step 2: Convert to fraction form
    538,326.40/807,343.80 = 159,246.40/x
  3. Step 3: Cross multiply
    538,326.40x = 807,343.80 × 159,246.40
  4. Step 4: Simplify right side
    538,326.40x = 128,566,593,712.32
  5. Step 5: Solve for x
    x = 128,566,593,712.32/538,326.40
  6. Step 6: Final answer
    x = 238,826.47

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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.