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Finding the Fourth Proportional to 201,270.40, 277,779.42 and 129,858.16

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Solution

The fourth proportional to 201,270.40, 277,779.42 and 129,858.16 is: 179,221.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,270.40 : 277,779.42 = 129,858.16 : x
  2. Step 2: Convert to fraction form
    201,270.40/277,779.42 = 129,858.16/x
  3. Step 3: Cross multiply
    201,270.40x = 277,779.42 × 129,858.16
  4. Step 4: Simplify right side
    201,270.40x = 36,071,924,367.07
  5. Step 5: Solve for x
    x = 36,071,924,367.07/201,270.40
  6. Step 6: Final answer
    x = 179,221.21

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1.5x scale

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.