Home / 389,615.55-583,935.46-209,257.76

Finding the Fourth Proportional to 389,615.55, 583,935.46 and 209,257.76

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Solution

The fourth proportional to 389,615.55, 583,935.46 and 209,257.76 is: 313,624.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,615.55 : 583,935.46 = 209,257.76 : x
  2. Step 2: Convert to fraction form
    389,615.55/583,935.46 = 209,257.76/x
  3. Step 3: Cross multiply
    389,615.55x = 583,935.46 × 209,257.76
  4. Step 4: Simplify right side
    389,615.55x = 122,193,026,344.17
  5. Step 5: Solve for x
    x = 122,193,026,344.17/389,615.55
  6. Step 6: Final answer
    x = 313,624.61

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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.