Home / 389,839.61-537,980.54-217,764.83

Finding the Fourth Proportional to 389,839.61, 537,980.54 and 217,764.83

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Solution

The fourth proportional to 389,839.61, 537,980.54 and 217,764.83 is: 300,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,839.61 : 537,980.54 = 217,764.83 : x
  2. Step 2: Convert to fraction form
    389,839.61/537,980.54 = 217,764.83/x
  3. Step 3: Cross multiply
    389,839.61x = 537,980.54 × 217,764.83
  4. Step 4: Simplify right side
    389,839.61x = 117,153,242,321.98
  5. Step 5: Solve for x
    x = 117,153,242,321.98/389,839.61
  6. Step 6: Final answer
    x = 300,516.51

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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.