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Finding the Fourth Proportional to 280,615.74, 387,377.22 and 178,780.86

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Solution

The fourth proportional to 280,615.74, 387,377.22 and 178,780.86 is: 246,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,615.74 : 387,377.22 = 178,780.86 : x
  2. Step 2: Convert to fraction form
    280,615.74/387,377.22 = 178,780.86/x
  3. Step 3: Cross multiply
    280,615.74x = 387,377.22 × 178,780.86
  4. Step 4: Simplify right side
    280,615.74x = 69,255,632,536.01
  5. Step 5: Solve for x
    x = 69,255,632,536.01/280,615.74
  6. Step 6: Final answer
    x = 246,798.82

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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.