Home / 389,501.55-584,331.30-221,102.55

Finding the Fourth Proportional to 389,501.55, 584,331.30 and 221,102.55

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Solution

The fourth proportional to 389,501.55, 584,331.30 and 221,102.55 is: 331,698.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,501.55 : 584,331.30 = 221,102.55 : x
  2. Step 2: Convert to fraction form
    389,501.55/584,331.30 = 221,102.55/x
  3. Step 3: Cross multiply
    389,501.55x = 584,331.30 × 221,102.55
  4. Step 4: Simplify right side
    389,501.55x = 129,197,140,474.82
  5. Step 5: Solve for x
    x = 129,197,140,474.82/389,501.55
  6. Step 6: Final answer
    x = 331,698.66

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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.