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Finding the Fourth Proportional to 280,482.28, 387,074.82 and 153,167.56

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Solution

The fourth proportional to 280,482.28, 387,074.82 and 153,167.56 is: 211,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,482.28 : 387,074.82 = 153,167.56 : x
  2. Step 2: Convert to fraction form
    280,482.28/387,074.82 = 153,167.56/x
  3. Step 3: Cross multiply
    280,482.28x = 387,074.82 × 153,167.56
  4. Step 4: Simplify right side
    280,482.28x = 59,287,305,716.84
  5. Step 5: Solve for x
    x = 59,287,305,716.84/280,482.28
  6. Step 6: Final answer
    x = 211,376.30

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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.