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Finding the Fourth Proportional to 280,548.73, 387,156.63 and 153,224.33

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Solution

The fourth proportional to 280,548.73, 387,156.63 and 153,224.33 is: 211,449.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,548.73 : 387,156.63 = 153,224.33 : x
  2. Step 2: Convert to fraction form
    280,548.73/387,156.63 = 153,224.33/x
  3. Step 3: Cross multiply
    280,548.73x = 387,156.63 × 153,224.33
  4. Step 4: Simplify right side
    280,548.73x = 59,321,813,875.62
  5. Step 5: Solve for x
    x = 59,321,813,875.62/280,548.73
  6. Step 6: Final answer
    x = 211,449.23

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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.