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Finding the Fourth Proportional to 251,076.65, 346,485.75 and 137,899.40

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Solution

The fourth proportional to 251,076.65, 346,485.75 and 137,899.40 is: 190,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,076.65 : 346,485.75 = 137,899.40 : x
  2. Step 2: Convert to fraction form
    251,076.65/346,485.75 = 137,899.40/x
  3. Step 3: Cross multiply
    251,076.65x = 346,485.75 × 137,899.40
  4. Step 4: Simplify right side
    251,076.65x = 47,780,175,301.12
  5. Step 5: Solve for x
    x = 47,780,175,301.12/251,076.65
  6. Step 6: Final answer
    x = 190,301.15

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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.