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Finding the Fourth Proportional to 260,147.70, 390,294.45 and 127,032.30

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Solution

The fourth proportional to 260,147.70, 390,294.45 and 127,032.30 is: 190,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,147.70 : 390,294.45 = 127,032.30 : x
  2. Step 2: Convert to fraction form
    260,147.70/390,294.45 = 127,032.30/x
  3. Step 3: Cross multiply
    260,147.70x = 390,294.45 × 127,032.30
  4. Step 4: Simplify right side
    260,147.70x = 49,580,001,660.74
  5. Step 5: Solve for x
    x = 49,580,001,660.74/260,147.70
  6. Step 6: Final answer
    x = 190,584.05

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1.5x scale

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.