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Finding the Fourth Proportional to 280,695.85, 387,360.36 and 151,634.36

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Solution

The fourth proportional to 280,695.85, 387,360.36 and 151,634.36 is: 209,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,695.85 : 387,360.36 = 151,634.36 : x
  2. Step 2: Convert to fraction form
    280,695.85/387,360.36 = 151,634.36/x
  3. Step 3: Cross multiply
    280,695.85x = 387,360.36 × 151,634.36
  4. Step 4: Simplify right side
    280,695.85x = 58,737,141,246.37
  5. Step 5: Solve for x
    x = 58,737,141,246.37/280,695.85
  6. Step 6: Final answer
    x = 209,255.47

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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.