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Finding the Fourth Proportional to 251,207.89, 346,665.66 and 136,485.76

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Solution

The fourth proportional to 251,207.89, 346,665.66 and 136,485.76 is: 188,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,207.89 : 346,665.66 = 136,485.76 : x
  2. Step 2: Convert to fraction form
    251,207.89/346,665.66 = 136,485.76/x
  3. Step 3: Cross multiply
    251,207.89x = 346,665.66 × 136,485.76
  4. Step 4: Simplify right side
    251,207.89x = 47,314,926,071.00
  5. Step 5: Solve for x
    x = 47,314,926,071.00/251,207.89
  6. Step 6: Final answer
    x = 188,349.68

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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.