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Finding the Fourth Proportional to 251,089.89, 346,564.31 and 143,722.17

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Solution

The fourth proportional to 251,089.89, 346,564.31 and 143,722.17 is: 198,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,089.89 : 346,564.31 = 143,722.17 : x
  2. Step 2: Convert to fraction form
    251,089.89/346,564.31 = 143,722.17/x
  3. Step 3: Cross multiply
    251,089.89x = 346,564.31 × 143,722.17
  4. Step 4: Simplify right side
    251,089.89x = 49,808,974,677.75
  5. Step 5: Solve for x
    x = 49,808,974,677.75/251,089.89
  6. Step 6: Final answer
    x = 198,371.09

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1.5x scale

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.