Home / 389,201.52-537,097.12-219,434.40

Finding the Fourth Proportional to 389,201.52, 537,097.12 and 219,434.40

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Solution

The fourth proportional to 389,201.52, 537,097.12 and 219,434.40 is: 302,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,201.52 : 537,097.12 = 219,434.40 : x
  2. Step 2: Convert to fraction form
    389,201.52/537,097.12 = 219,434.40/x
  3. Step 3: Cross multiply
    389,201.52x = 537,097.12 × 219,434.40
  4. Step 4: Simplify right side
    389,201.52x = 117,857,584,268.93
  5. Step 5: Solve for x
    x = 117,857,584,268.93/389,201.52
  6. Step 6: Final answer
    x = 302,818.92

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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.