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Finding the Fourth Proportional to 251,088.64, 346,562.56 and 143,720.88

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Solution

The fourth proportional to 251,088.64, 346,562.56 and 143,720.88 is: 198,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,088.64 : 346,562.56 = 143,720.88 : x
  2. Step 2: Convert to fraction form
    251,088.64/346,562.56 = 143,720.88/x
  3. Step 3: Cross multiply
    251,088.64x = 346,562.56 × 143,720.88
  4. Step 4: Simplify right side
    251,088.64x = 49,808,276,098.25
  5. Step 5: Solve for x
    x = 49,808,276,098.25/251,088.64
  6. Step 6: Final answer
    x = 198,369.29

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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.