Home / 278,144.64-383,709.60-163,385.28

Finding the Fourth Proportional to 278,144.64, 383,709.60 and 163,385.28

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Solution

The fourth proportional to 278,144.64, 383,709.60 and 163,385.28 is: 225,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,144.64 : 383,709.60 = 163,385.28 : x
  2. Step 2: Convert to fraction form
    278,144.64/383,709.60 = 163,385.28/x
  3. Step 3: Cross multiply
    278,144.64x = 383,709.60 × 163,385.28
  4. Step 4: Simplify right side
    278,144.64x = 62,692,500,434.69
  5. Step 5: Solve for x
    x = 62,692,500,434.69/278,144.64
  6. Step 6: Final answer
    x = 225,395.32

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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.