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Finding the Fourth Proportional to 291,727.02, 399,957.87 and 286,412.88

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Solution

The fourth proportional to 291,727.02, 399,957.87 and 286,412.88 is: 392,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,727.02 : 399,957.87 = 286,412.88 : x
  2. Step 2: Convert to fraction form
    291,727.02/399,957.87 = 286,412.88/x
  3. Step 3: Cross multiply
    291,727.02x = 399,957.87 × 286,412.88
  4. Step 4: Simplify right side
    291,727.02x = 114,553,085,425.37
  5. Step 5: Solve for x
    x = 114,553,085,425.37/291,727.02
  6. Step 6: Final answer
    x = 392,672.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.