Home / 389,585.43-537,636.30-215,155.10

Finding the Fourth Proportional to 389,585.43, 537,636.30 and 215,155.10

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Solution

The fourth proportional to 389,585.43, 537,636.30 and 215,155.10 is: 296,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,585.43 : 537,636.30 = 215,155.10 : x
  2. Step 2: Convert to fraction form
    389,585.43/537,636.30 = 215,155.10/x
  3. Step 3: Cross multiply
    389,585.43x = 537,636.30 × 215,155.10
  4. Step 4: Simplify right side
    389,585.43x = 115,675,191,890.13
  5. Step 5: Solve for x
    x = 115,675,191,890.13/389,585.43
  6. Step 6: Final answer
    x = 296,918.68

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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.