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Finding the Fourth Proportional to 191,055.51, 286,472.09 and 140,484.78

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Solution

The fourth proportional to 191,055.51, 286,472.09 and 140,484.78 is: 210,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,055.51 : 286,472.09 = 140,484.78 : x
  2. Step 2: Convert to fraction form
    191,055.51/286,472.09 = 140,484.78/x
  3. Step 3: Cross multiply
    191,055.51x = 286,472.09 × 140,484.78
  4. Step 4: Simplify right side
    191,055.51x = 40,244,968,891.00
  5. Step 5: Solve for x
    x = 40,244,968,891.00/191,055.51
  6. Step 6: Final answer
    x = 210,645.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.