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Finding the Fourth Proportional to 280,794.78, 387,499.68 and 153,472.50

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Solution

The fourth proportional to 280,794.78, 387,499.68 and 153,472.50 is: 211,793.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,794.78 : 387,499.68 = 153,472.50 : x
  2. Step 2: Convert to fraction form
    280,794.78/387,499.68 = 153,472.50/x
  3. Step 3: Cross multiply
    280,794.78x = 387,499.68 × 153,472.50
  4. Step 4: Simplify right side
    280,794.78x = 59,470,544,638.80
  5. Step 5: Solve for x
    x = 59,470,544,638.80/280,794.78
  6. Step 6: Final answer
    x = 211,793.63

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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.