Home / 402,988.27-556,127.43-219,230.85

Finding the Fourth Proportional to 402,988.27, 556,127.43 and 219,230.85

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Solution

The fourth proportional to 402,988.27, 556,127.43 and 219,230.85 is: 302,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,988.27 : 556,127.43 = 219,230.85 : x
  2. Step 2: Convert to fraction form
    402,988.27/556,127.43 = 219,230.85/x
  3. Step 3: Cross multiply
    402,988.27x = 556,127.43 × 219,230.85
  4. Step 4: Simplify right side
    402,988.27x = 121,920,287,238.45
  5. Step 5: Solve for x
    x = 121,920,287,238.45/402,988.27
  6. Step 6: Final answer
    x = 302,540.53

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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.