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Finding the Fourth Proportional to 280,884.92, 387,622.56 and 153,560.52

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Solution

The fourth proportional to 280,884.92, 387,622.56 and 153,560.52 is: 211,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,884.92 : 387,622.56 = 153,560.52 : x
  2. Step 2: Convert to fraction form
    280,884.92/387,622.56 = 153,560.52/x
  3. Step 3: Cross multiply
    280,884.92x = 387,622.56 × 153,560.52
  4. Step 4: Simplify right side
    280,884.92x = 59,523,521,877.33
  5. Step 5: Solve for x
    x = 59,523,521,877.33/280,884.92
  6. Step 6: Final answer
    x = 211,914.27

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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.