Home / 389,605.04-537,663.34-215,174.78

Finding the Fourth Proportional to 389,605.04, 537,663.34 and 215,174.78

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Solution

The fourth proportional to 389,605.04, 537,663.34 and 215,174.78 is: 296,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,605.04 : 537,663.34 = 215,174.78 : x
  2. Step 2: Convert to fraction form
    389,605.04/537,663.34 = 215,174.78/x
  3. Step 3: Cross multiply
    389,605.04x = 537,663.34 × 215,174.78
  4. Step 4: Simplify right side
    389,605.04x = 115,691,590,898.57
  5. Step 5: Solve for x
    x = 115,691,590,898.57/389,605.04
  6. Step 6: Final answer
    x = 296,945.83

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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.