Home / 389,607.04-537,666.10-215,176.78

Finding the Fourth Proportional to 389,607.04, 537,666.10 and 215,176.78

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Solution

The fourth proportional to 389,607.04, 537,666.10 and 215,176.78 is: 296,948.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,607.04 : 537,666.10 = 215,176.78 : x
  2. Step 2: Convert to fraction form
    389,607.04/537,666.10 = 215,176.78/x
  3. Step 3: Cross multiply
    389,607.04x = 537,666.10 × 215,176.78
  4. Step 4: Simplify right side
    389,607.04x = 115,693,260,113.16
  5. Step 5: Solve for x
    x = 115,693,260,113.16/389,607.04
  6. Step 6: Final answer
    x = 296,948.59

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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.