Home / 191,778.40-288,013.20-185,557.60

Finding the Fourth Proportional to 191,778.40, 288,013.20 and 185,557.60

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Solution

The fourth proportional to 191,778.40, 288,013.20 and 185,557.60 is: 278,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,778.40 : 288,013.20 = 185,557.60 : x
  2. Step 2: Convert to fraction form
    191,778.40/288,013.20 = 185,557.60/x
  3. Step 3: Cross multiply
    191,778.40x = 288,013.20 × 185,557.60
  4. Step 4: Simplify right side
    191,778.40x = 53,443,038,160.32
  5. Step 5: Solve for x
    x = 53,443,038,160.32/191,778.40
  6. Step 6: Final answer
    x = 278,670.79

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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.