Home / 389,857.18-537,945.65-217,753.94

Finding the Fourth Proportional to 389,857.18, 537,945.65 and 217,753.94

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Solution

The fourth proportional to 389,857.18, 537,945.65 and 217,753.94 is: 300,468.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,857.18 : 537,945.65 = 217,753.94 : x
  2. Step 2: Convert to fraction form
    389,857.18/537,945.65 = 217,753.94/x
  3. Step 3: Cross multiply
    389,857.18x = 537,945.65 × 217,753.94
  4. Step 4: Simplify right side
    389,857.18x = 117,139,784,793.36
  5. Step 5: Solve for x
    x = 117,139,784,793.36/389,857.18
  6. Step 6: Final answer
    x = 300,468.46

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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.