Home / 257,617.38-355,426.98-155,604.72

Finding the Fourth Proportional to 257,617.38, 355,426.98 and 155,604.72

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Solution

The fourth proportional to 257,617.38, 355,426.98 and 155,604.72 is: 214,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,617.38 : 355,426.98 = 155,604.72 : x
  2. Step 2: Convert to fraction form
    257,617.38/355,426.98 = 155,604.72/x
  3. Step 3: Cross multiply
    257,617.38x = 355,426.98 × 155,604.72
  4. Step 4: Simplify right side
    257,617.38x = 55,306,115,703.35
  5. Step 5: Solve for x
    x = 55,306,115,703.35/257,617.38
  6. Step 6: Final answer
    x = 214,683.17

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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.