Home / 280,475.82-387,056.61-153,151.52

Finding the Fourth Proportional to 280,475.82, 387,056.61 and 153,151.52

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Solution

The fourth proportional to 280,475.82, 387,056.61 and 153,151.52 is: 211,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,475.82 : 387,056.61 = 153,151.52 : x
  2. Step 2: Convert to fraction form
    280,475.82/387,056.61 = 153,151.52/x
  3. Step 3: Cross multiply
    280,475.82x = 387,056.61 × 153,151.52
  4. Step 4: Simplify right side
    280,475.82x = 59,278,306,212.26
  5. Step 5: Solve for x
    x = 59,278,306,212.26/280,475.82
  6. Step 6: Final answer
    x = 211,349.08

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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.