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Finding the Fourth Proportional to 201,897.60, 278,612.64 and 126,487.68

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Solution

The fourth proportional to 201,897.60, 278,612.64 and 126,487.68 is: 174,549.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,897.60 : 278,612.64 = 126,487.68 : x
  2. Step 2: Convert to fraction form
    201,897.60/278,612.64 = 126,487.68/x
  3. Step 3: Cross multiply
    201,897.60x = 278,612.64 × 126,487.68
  4. Step 4: Simplify right side
    201,897.60x = 35,241,066,452.28
  5. Step 5: Solve for x
    x = 35,241,066,452.28/201,897.60
  6. Step 6: Final answer
    x = 174,549.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.