Home / 278,862.12-384,885.60-165,663

Finding the Fourth Proportional to 278,862.12, 384,885.60 and 165,663

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Solution

The fourth proportional to 278,862.12, 384,885.60 and 165,663 is: 228,648.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,862.12 : 384,885.60 = 165,663 : x
  2. Step 2: Convert to fraction form
    278,862.12/384,885.60 = 165,663/x
  3. Step 3: Cross multiply
    278,862.12x = 384,885.60 × 165,663
  4. Step 4: Simplify right side
    278,862.12x = 63,761,303,152.80
  5. Step 5: Solve for x
    x = 63,761,303,152.80/278,862.12
  6. Step 6: Final answer
    x = 228,648.13

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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.