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Finding the Fourth Proportional to 223,510.55, 308,442.89 and 121,536.07

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Solution

The fourth proportional to 223,510.55, 308,442.89 and 121,536.07 is: 167,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,510.55 : 308,442.89 = 121,536.07 : x
  2. Step 2: Convert to fraction form
    223,510.55/308,442.89 = 121,536.07/x
  3. Step 3: Cross multiply
    223,510.55x = 308,442.89 × 121,536.07
  4. Step 4: Simplify right side
    223,510.55x = 37,486,937,744.99
  5. Step 5: Solve for x
    x = 37,486,937,744.99/223,510.55
  6. Step 6: Final answer
    x = 167,718.87

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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.