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Finding the Fourth Proportional to 257,674.40, 355,600.17 and 155,680.16

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Solution

The fourth proportional to 257,674.40, 355,600.17 and 155,680.16 is: 214,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,674.40 : 355,600.17 = 155,680.16 : x
  2. Step 2: Convert to fraction form
    257,674.40/355,600.17 = 155,680.16/x
  3. Step 3: Cross multiply
    257,674.40x = 355,600.17 × 155,680.16
  4. Step 4: Simplify right side
    257,674.40x = 55,359,890,167.43
  5. Step 5: Solve for x
    x = 55,359,890,167.43/257,674.40
  6. Step 6: Final answer
    x = 214,844.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.