Home / 486,128.59-670,857.49-268,337.31

Finding the Fourth Proportional to 486,128.59, 670,857.49 and 268,337.31

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Solution

The fourth proportional to 486,128.59, 670,857.49 and 268,337.31 is: 370,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,128.59 : 670,857.49 = 268,337.31 : x
  2. Step 2: Convert to fraction form
    486,128.59/670,857.49 = 268,337.31/x
  3. Step 3: Cross multiply
    486,128.59x = 670,857.49 × 268,337.31
  4. Step 4: Simplify right side
    486,128.59x = 180,016,094,259.95
  5. Step 5: Solve for x
    x = 180,016,094,259.95/486,128.59
  6. Step 6: Final answer
    x = 370,305.51

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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.