Home / 278,899.50-385,894.62-243,163.92

Finding the Fourth Proportional to 278,899.50, 385,894.62 and 243,163.92

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Solution

The fourth proportional to 278,899.50, 385,894.62 and 243,163.92 is: 336,449.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,899.50 : 385,894.62 = 243,163.92 : x
  2. Step 2: Convert to fraction form
    278,899.50/385,894.62 = 243,163.92/x
  3. Step 3: Cross multiply
    278,899.50x = 385,894.62 × 243,163.92
  4. Step 4: Simplify right side
    278,899.50x = 93,835,648,506.11
  5. Step 5: Solve for x
    x = 93,835,648,506.11/278,899.50
  6. Step 6: Final answer
    x = 336,449.68

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1.5x scale

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.