Home / 389,325.61-537,189.12-223,721.55

Finding the Fourth Proportional to 389,325.61, 537,189.12 and 223,721.55

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Solution

The fourth proportional to 389,325.61, 537,189.12 and 223,721.55 is: 308,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,325.61 : 537,189.12 = 223,721.55 : x
  2. Step 2: Convert to fraction form
    389,325.61/537,189.12 = 223,721.55/x
  3. Step 3: Cross multiply
    389,325.61x = 537,189.12 × 223,721.55
  4. Step 4: Simplify right side
    389,325.61x = 120,180,784,709.60
  5. Step 5: Solve for x
    x = 120,180,784,709.60/389,325.61
  6. Step 6: Final answer
    x = 308,689.65

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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.