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Finding the Fourth Proportional to 660,856.80, 991,285.98 and 181,088.64

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Solution

The fourth proportional to 660,856.80, 991,285.98 and 181,088.64 is: 271,633.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,856.80 : 991,285.98 = 181,088.64 : x
  2. Step 2: Convert to fraction form
    660,856.80/991,285.98 = 181,088.64/x
  3. Step 3: Cross multiply
    660,856.80x = 991,285.98 × 181,088.64
  4. Step 4: Simplify right side
    660,856.80x = 179,510,629,969.27
  5. Step 5: Solve for x
    x = 179,510,629,969.27/660,856.80
  6. Step 6: Final answer
    x = 271,633.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.