Home / 293,642.28-440,405.10-143,818.20

Finding the Fourth Proportional to 293,642.28, 440,405.10 and 143,818.20

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Solution

The fourth proportional to 293,642.28, 440,405.10 and 143,818.20 is: 215,698.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,642.28 : 440,405.10 = 143,818.20 : x
  2. Step 2: Convert to fraction form
    293,642.28/440,405.10 = 143,818.20/x
  3. Step 3: Cross multiply
    293,642.28x = 440,405.10 × 143,818.20
  4. Step 4: Simplify right side
    293,642.28x = 63,338,268,752.82
  5. Step 5: Solve for x
    x = 63,338,268,752.82/293,642.28
  6. Step 6: Final answer
    x = 215,698.74

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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.