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Finding the Fourth Proportional to 228,723.51, 315,655.08 and 138,101.52

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Solution

The fourth proportional to 228,723.51, 315,655.08 and 138,101.52 is: 190,590.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,723.51 : 315,655.08 = 138,101.52 : x
  2. Step 2: Convert to fraction form
    228,723.51/315,655.08 = 138,101.52/x
  3. Step 3: Cross multiply
    228,723.51x = 315,655.08 × 138,101.52
  4. Step 4: Simplify right side
    228,723.51x = 43,592,446,343.72
  5. Step 5: Solve for x
    x = 43,592,446,343.72/228,723.51
  6. Step 6: Final answer
    x = 190,590.14

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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.