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Finding the Fourth Proportional to 647,632.40, 970,987.80 and 248,118.80

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Solution

The fourth proportional to 647,632.40, 970,987.80 and 248,118.80 is: 372,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,632.40 : 970,987.80 = 248,118.80 : x
  2. Step 2: Convert to fraction form
    647,632.40/970,987.80 = 248,118.80/x
  3. Step 3: Cross multiply
    647,632.40x = 970,987.80 × 248,118.80
  4. Step 4: Simplify right side
    647,632.40x = 240,920,327,750.64
  5. Step 5: Solve for x
    x = 240,920,327,750.64/647,632.40
  6. Step 6: Final answer
    x = 372,001.66

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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.