Home / 389,327.48-537,146.12-217,217.57

Finding the Fourth Proportional to 389,327.48, 537,146.12 and 217,217.57

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Solution

The fourth proportional to 389,327.48, 537,146.12 and 217,217.57 is: 299,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,327.48 : 537,146.12 = 217,217.57 : x
  2. Step 2: Convert to fraction form
    389,327.48/537,146.12 = 217,217.57/x
  3. Step 3: Cross multiply
    389,327.48x = 537,146.12 × 217,217.57
  4. Step 4: Simplify right side
    389,327.48x = 116,677,571,149.51
  5. Step 5: Solve for x
    x = 116,677,571,149.51/389,327.48
  6. Step 6: Final answer
    x = 299,690.05

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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.