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Finding the Fourth Proportional to 438,149.20, 657,223.80 and 248,536.30

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Solution

The fourth proportional to 438,149.20, 657,223.80 and 248,536.30 is: 372,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,149.20 : 657,223.80 = 248,536.30 : x
  2. Step 2: Convert to fraction form
    438,149.20/657,223.80 = 248,536.30/x
  3. Step 3: Cross multiply
    438,149.20x = 657,223.80 × 248,536.30
  4. Step 4: Simplify right side
    438,149.20x = 163,343,971,523.94
  5. Step 5: Solve for x
    x = 163,343,971,523.94/438,149.20
  6. Step 6: Final answer
    x = 372,804.45

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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.