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Finding the Fourth Proportional to 265,743.40, 398,615.10 and 254,225.20

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Solution

The fourth proportional to 265,743.40, 398,615.10 and 254,225.20 is: 381,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,743.40 : 398,615.10 = 254,225.20 : x
  2. Step 2: Convert to fraction form
    265,743.40/398,615.10 = 254,225.20/x
  3. Step 3: Cross multiply
    265,743.40x = 398,615.10 × 254,225.20
  4. Step 4: Simplify right side
    265,743.40x = 101,338,003,520.52
  5. Step 5: Solve for x
    x = 101,338,003,520.52/265,743.40
  6. Step 6: Final answer
    x = 381,337.80

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1.5x scale

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.