Home / 389,948.16-538,036.22-226,507.58

Finding the Fourth Proportional to 389,948.16, 538,036.22 and 226,507.58

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Solution

The fourth proportional to 389,948.16, 538,036.22 and 226,507.58 is: 312,526.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,948.16 : 538,036.22 = 226,507.58 : x
  2. Step 2: Convert to fraction form
    389,948.16/538,036.22 = 226,507.58/x
  3. Step 3: Cross multiply
    389,948.16x = 538,036.22 × 226,507.58
  4. Step 4: Simplify right side
    389,948.16x = 121,869,278,321.83
  5. Step 5: Solve for x
    x = 121,869,278,321.83/389,948.16
  6. Step 6: Final answer
    x = 312,526.87

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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.