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Finding the Fourth Proportional to 576,139.29, 863,720.95 and 238,969.50

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Solution

The fourth proportional to 576,139.29, 863,720.95 and 238,969.50 is: 358,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,139.29 : 863,720.95 = 238,969.50 : x
  2. Step 2: Convert to fraction form
    576,139.29/863,720.95 = 238,969.50/x
  3. Step 3: Cross multiply
    576,139.29x = 863,720.95 × 238,969.50
  4. Step 4: Simplify right side
    576,139.29x = 206,402,963,561.03
  5. Step 5: Solve for x
    x = 206,402,963,561.03/576,139.29
  6. Step 6: Final answer
    x = 358,251.84

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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.