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Finding the Fourth Proportional to 438,637.31, 656,458.93 and 367,640.10

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Solution

The fourth proportional to 438,637.31, 656,458.93 and 367,640.10 is: 550,205.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,637.31 : 656,458.93 = 367,640.10 : x
  2. Step 2: Convert to fraction form
    438,637.31/656,458.93 = 367,640.10/x
  3. Step 3: Cross multiply
    438,637.31x = 656,458.93 × 367,640.10
  4. Step 4: Simplify right side
    438,637.31x = 241,340,627,130.64
  5. Step 5: Solve for x
    x = 241,340,627,130.64/438,637.31
  6. Step 6: Final answer
    x = 550,205.43

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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.