Home / 389,327.49-537,146.13-217,217.55

Finding the Fourth Proportional to 389,327.49, 537,146.13 and 217,217.55

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Solution

The fourth proportional to 389,327.49, 537,146.13 and 217,217.55 is: 299,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,327.49 : 537,146.13 = 217,217.55 : x
  2. Step 2: Convert to fraction form
    389,327.49/537,146.13 = 217,217.55/x
  3. Step 3: Cross multiply
    389,327.49x = 537,146.13 × 217,217.55
  4. Step 4: Simplify right side
    389,327.49x = 116,677,566,350.58
  5. Step 5: Solve for x
    x = 116,677,566,350.58/389,327.49
  6. Step 6: Final answer
    x = 299,690.03

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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.