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Finding the Fourth Proportional to 280,800.08, 387,498.41 and 153,476.58

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Solution

The fourth proportional to 280,800.08, 387,498.41 and 153,476.58 is: 211,794.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,800.08 : 387,498.41 = 153,476.58 : x
  2. Step 2: Convert to fraction form
    280,800.08/387,498.41 = 153,476.58/x
  3. Step 3: Cross multiply
    280,800.08x = 387,498.41 × 153,476.58
  4. Step 4: Simplify right side
    280,800.08x = 59,471,930,722.24
  5. Step 5: Solve for x
    x = 59,471,930,722.24/280,800.08
  6. Step 6: Final answer
    x = 211,794.56

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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.