Home / 380,925.18-571,398.30-212,351.22

Finding the Fourth Proportional to 380,925.18, 571,398.30 and 212,351.22

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Solution

The fourth proportional to 380,925.18, 571,398.30 and 212,351.22 is: 318,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,925.18 : 571,398.30 = 212,351.22 : x
  2. Step 2: Convert to fraction form
    380,925.18/571,398.30 = 212,351.22/x
  3. Step 3: Cross multiply
    380,925.18x = 571,398.30 × 212,351.22
  4. Step 4: Simplify right side
    380,925.18x = 121,337,126,110.93
  5. Step 5: Solve for x
    x = 121,337,126,110.93/380,925.18
  6. Step 6: Final answer
    x = 318,532.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.