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Finding the Fourth Proportional to 280,675.56, 387,318.18 and 153,327.72

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Solution

The fourth proportional to 280,675.56, 387,318.18 and 153,327.72 is: 211,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,675.56 : 387,318.18 = 153,327.72 : x
  2. Step 2: Convert to fraction form
    280,675.56/387,318.18 = 153,327.72/x
  3. Step 3: Cross multiply
    280,675.56x = 387,318.18 × 153,327.72
  4. Step 4: Simplify right side
    280,675.56x = 59,386,613,453.95
  5. Step 5: Solve for x
    x = 59,386,613,453.95/280,675.56
  6. Step 6: Final answer
    x = 211,584.55

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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.