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Finding the Fourth Proportional to 223,368.84, 308,320.83 and 143,012.79

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Solution

The fourth proportional to 223,368.84, 308,320.83 and 143,012.79 is: 197,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,368.84 : 308,320.83 = 143,012.79 : x
  2. Step 2: Convert to fraction form
    223,368.84/308,320.83 = 143,012.79/x
  3. Step 3: Cross multiply
    223,368.84x = 308,320.83 × 143,012.79
  4. Step 4: Simplify right side
    223,368.84x = 44,093,822,113.42
  5. Step 5: Solve for x
    x = 44,093,822,113.42/223,368.84
  6. Step 6: Final answer
    x = 197,403.64

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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.