Home / 389,830.69-537,960.54-217,751.05

Finding the Fourth Proportional to 389,830.69, 537,960.54 and 217,751.05

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Solution

The fourth proportional to 389,830.69, 537,960.54 and 217,751.05 is: 300,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,830.69 : 537,960.54 = 217,751.05 : x
  2. Step 2: Convert to fraction form
    389,830.69/537,960.54 = 217,751.05/x
  3. Step 3: Cross multiply
    389,830.69x = 537,960.54 × 217,751.05
  4. Step 4: Simplify right side
    389,830.69x = 117,141,472,443.57
  5. Step 5: Solve for x
    x = 117,141,472,443.57/389,830.69
  6. Step 6: Final answer
    x = 300,493.20

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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.