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Finding the Fourth Proportional to 540,891.28, 811,274.95 and 141,570.60

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Solution

The fourth proportional to 540,891.28, 811,274.95 and 141,570.60 is: 212,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,891.28 : 811,274.95 = 141,570.60 : x
  2. Step 2: Convert to fraction form
    540,891.28/811,274.95 = 141,570.60/x
  3. Step 3: Cross multiply
    540,891.28x = 811,274.95 × 141,570.60
  4. Step 4: Simplify right side
    540,891.28x = 114,852,681,436.47
  5. Step 5: Solve for x
    x = 114,852,681,436.47/540,891.28
  6. Step 6: Final answer
    x = 212,339.68

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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.