Home / 384,877.85-531,122.25-215,127.77

Finding the Fourth Proportional to 384,877.85, 531,122.25 and 215,127.77

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Solution

The fourth proportional to 384,877.85, 531,122.25 and 215,127.77 is: 296,871.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,877.85 : 531,122.25 = 215,127.77 : x
  2. Step 2: Convert to fraction form
    384,877.85/531,122.25 = 215,127.77/x
  3. Step 3: Cross multiply
    384,877.85x = 531,122.25 × 215,127.77
  4. Step 4: Simplify right side
    384,877.85x = 114,259,141,508.63
  5. Step 5: Solve for x
    x = 114,259,141,508.63/384,877.85
  6. Step 6: Final answer
    x = 296,871.18

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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.