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Finding the Fourth Proportional to 280,487.00, 387,073.49 and 153,162.60

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Solution

The fourth proportional to 280,487.00, 387,073.49 and 153,162.60 is: 211,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,487.00 : 387,073.49 = 153,162.60 : x
  2. Step 2: Convert to fraction form
    280,487.00/387,073.49 = 153,162.60/x
  3. Step 3: Cross multiply
    280,487.00x = 387,073.49 × 153,162.60
  4. Step 4: Simplify right side
    280,487.00x = 59,285,179,902.14
  5. Step 5: Solve for x
    x = 59,285,179,902.14/280,487.00
  6. Step 6: Final answer
    x = 211,365.16

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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.