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Finding the Fourth Proportional to 291,779.64, 402,456.06 and 178,658.28

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Solution

The fourth proportional to 291,779.64, 402,456.06 and 178,658.28 is: 246,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,779.64 : 402,456.06 = 178,658.28 : x
  2. Step 2: Convert to fraction form
    291,779.64/402,456.06 = 178,658.28/x
  3. Step 3: Cross multiply
    291,779.64x = 402,456.06 × 178,658.28
  4. Step 4: Simplify right side
    291,779.64x = 71,902,107,455.18
  5. Step 5: Solve for x
    x = 71,902,107,455.18/291,779.64
  6. Step 6: Final answer
    x = 246,426.06

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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.