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Finding the Fourth Proportional to 233,330.72, 349,918.23 and 91,139.11

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Solution

The fourth proportional to 233,330.72, 349,918.23 and 91,139.11 is: 136,678.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    233,330.72 : 349,918.23 = 91,139.11 : x
  2. Step 2: Convert to fraction form
    233,330.72/349,918.23 = 91,139.11/x
  3. Step 3: Cross multiply
    233,330.72x = 349,918.23 × 91,139.11
  4. Step 4: Simplify right side
    233,330.72x = 31,891,236,054.98
  5. Step 5: Solve for x
    x = 31,891,236,054.98/233,330.72
  6. Step 6: Final answer
    x = 136,678.26

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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.