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Finding the Fourth Proportional to 559,017.76, 838,516.72 and 138,293.60

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Solution

The fourth proportional to 559,017.76, 838,516.72 and 138,293.60 is: 207,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,017.76 : 838,516.72 = 138,293.60 : x
  2. Step 2: Convert to fraction form
    559,017.76/838,516.72 = 138,293.60/x
  3. Step 3: Cross multiply
    559,017.76x = 838,516.72 × 138,293.60
  4. Step 4: Simplify right side
    559,017.76x = 115,961,495,868.99
  5. Step 5: Solve for x
    x = 115,961,495,868.99/559,017.76
  6. Step 6: Final answer
    x = 207,437.95

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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.