Home / 220,434.32-304,268.10-129,783.08

Finding the Fourth Proportional to 220,434.32, 304,268.10 and 129,783.08

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Solution

The fourth proportional to 220,434.32, 304,268.10 and 129,783.08 is: 179,141.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,434.32 : 304,268.10 = 129,783.08 : x
  2. Step 2: Convert to fraction form
    220,434.32/304,268.10 = 129,783.08/x
  3. Step 3: Cross multiply
    220,434.32x = 304,268.10 × 129,783.08
  4. Step 4: Simplify right side
    220,434.32x = 39,488,851,163.75
  5. Step 5: Solve for x
    x = 39,488,851,163.75/220,434.32
  6. Step 6: Final answer
    x = 179,141.12

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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.