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Finding the Fourth Proportional to 291,943.91, 402,892.55 and 169,426.86

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Solution

The fourth proportional to 291,943.91, 402,892.55 and 169,426.86 is: 233,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,943.91 : 402,892.55 = 169,426.86 : x
  2. Step 2: Convert to fraction form
    291,943.91/402,892.55 = 169,426.86/x
  3. Step 3: Cross multiply
    291,943.91x = 402,892.55 × 169,426.86
  4. Step 4: Simplify right side
    291,943.91x = 68,260,818,816.76
  5. Step 5: Solve for x
    x = 68,260,818,816.76/291,943.91
  6. Step 6: Final answer
    x = 233,814.84

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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.