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Finding the Fourth Proportional to 438,361.68, 657,549.02 and 122,798.64

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Solution

The fourth proportional to 438,361.68, 657,549.02 and 122,798.64 is: 184,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,361.68 : 657,549.02 = 122,798.64 : x
  2. Step 2: Convert to fraction form
    438,361.68/657,549.02 = 122,798.64/x
  3. Step 3: Cross multiply
    438,361.68x = 657,549.02 × 122,798.64
  4. Step 4: Simplify right side
    438,361.68x = 80,746,125,389.33
  5. Step 5: Solve for x
    x = 80,746,125,389.33/438,361.68
  6. Step 6: Final answer
    x = 184,199.78

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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.