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Finding the Fourth Proportional to 247,222.32, 370,710.68 and 78,720.66

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Solution

The fourth proportional to 247,222.32, 370,710.68 and 78,720.66 is: 118,041.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,222.32 : 370,710.68 = 78,720.66 : x
  2. Step 2: Convert to fraction form
    247,222.32/370,710.68 = 78,720.66/x
  3. Step 3: Cross multiply
    247,222.32x = 370,710.68 × 78,720.66
  4. Step 4: Simplify right side
    247,222.32x = 29,182,589,398.65
  5. Step 5: Solve for x
    x = 29,182,589,398.65/247,222.32
  6. Step 6: Final answer
    x = 118,041.89

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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.