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Finding the Fourth Proportional to 253,743.40, 380,615.10 and 127,334.80

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Solution

The fourth proportional to 253,743.40, 380,615.10 and 127,334.80 is: 191,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,743.40 : 380,615.10 = 127,334.80 : x
  2. Step 2: Convert to fraction form
    253,743.40/380,615.10 = 127,334.80/x
  3. Step 3: Cross multiply
    253,743.40x = 380,615.10 × 127,334.80
  4. Step 4: Simplify right side
    253,743.40x = 48,465,547,635.48
  5. Step 5: Solve for x
    x = 48,465,547,635.48/253,743.40
  6. Step 6: Final answer
    x = 191,002.20

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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.