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Finding the Fourth Proportional to 648,343.20, 972,223.20 and 248,851.20

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Solution

The fourth proportional to 648,343.20, 972,223.20 and 248,851.20 is: 373,164.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,343.20 : 972,223.20 = 248,851.20 : x
  2. Step 2: Convert to fraction form
    648,343.20/972,223.20 = 248,851.20/x
  3. Step 3: Cross multiply
    648,343.20x = 972,223.20 × 248,851.20
  4. Step 4: Simplify right side
    648,343.20x = 241,938,909,987.84
  5. Step 5: Solve for x
    x = 241,938,909,987.84/648,343.20
  6. Step 6: Final answer
    x = 373,164.88

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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.