Home / 389,280.16-537,207.60-219,517.12

Finding the Fourth Proportional to 389,280.16, 537,207.60 and 219,517.12

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Solution

The fourth proportional to 389,280.16, 537,207.60 and 219,517.12 is: 302,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,280.16 : 537,207.60 = 219,517.12 : x
  2. Step 2: Convert to fraction form
    389,280.16/537,207.60 = 219,517.12/x
  3. Step 3: Cross multiply
    389,280.16x = 537,207.60 × 219,517.12
  4. Step 4: Simplify right side
    389,280.16x = 117,926,265,194.11
  5. Step 5: Solve for x
    x = 117,926,265,194.11/389,280.16
  6. Step 6: Final answer
    x = 302,934.18

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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.