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Finding the Fourth Proportional to 518,849.60, 778,015.20 and 238,049.60

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Solution

The fourth proportional to 518,849.60, 778,015.20 and 238,049.60 is: 356,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,849.60 : 778,015.20 = 238,049.60 : x
  2. Step 2: Convert to fraction form
    518,849.60/778,015.20 = 238,049.60/x
  3. Step 3: Cross multiply
    518,849.60x = 778,015.20 × 238,049.60
  4. Step 4: Simplify right side
    518,849.60x = 185,206,207,153.92
  5. Step 5: Solve for x
    x = 185,206,207,153.92/518,849.60
  6. Step 6: Final answer
    x = 356,955.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.