Home / 278,541.18-417,762.36-126,702.90

Finding the Fourth Proportional to 278,541.18, 417,762.36 and 126,702.90

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Solution

The fourth proportional to 278,541.18, 417,762.36 and 126,702.90 is: 190,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,541.18 : 417,762.36 = 126,702.90 : x
  2. Step 2: Convert to fraction form
    278,541.18/417,762.36 = 126,702.90/x
  3. Step 3: Cross multiply
    278,541.18x = 417,762.36 × 126,702.90
  4. Step 4: Simplify right side
    278,541.18x = 52,931,702,522.84
  5. Step 5: Solve for x
    x = 52,931,702,522.84/278,541.18
  6. Step 6: Final answer
    x = 190,031.87

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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.