Home / 245,244.20-338,426.10-143,279.10

Finding the Fourth Proportional to 245,244.20, 338,426.10 and 143,279.10

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Solution

The fourth proportional to 245,244.20, 338,426.10 and 143,279.10 is: 197,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,244.20 : 338,426.10 = 143,279.10 : x
  2. Step 2: Convert to fraction form
    245,244.20/338,426.10 = 143,279.10/x
  3. Step 3: Cross multiply
    245,244.20x = 338,426.10 × 143,279.10
  4. Step 4: Simplify right side
    245,244.20x = 48,489,387,024.51
  5. Step 5: Solve for x
    x = 48,489,387,024.51/245,244.20
  6. Step 6: Final answer
    x = 197,718.80

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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.