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Finding the Fourth Proportional to 247,216.88, 370,806.68 and 78,730.40

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Solution

The fourth proportional to 247,216.88, 370,806.68 and 78,730.40 is: 118,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,216.88 : 370,806.68 = 78,730.40 : x
  2. Step 2: Convert to fraction form
    247,216.88/370,806.68 = 78,730.40/x
  3. Step 3: Cross multiply
    247,216.88x = 370,806.68 × 78,730.40
  4. Step 4: Simplify right side
    247,216.88x = 29,193,756,581.86
  5. Step 5: Solve for x
    x = 29,193,756,581.86/247,216.88
  6. Step 6: Final answer
    x = 118,089.66

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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.