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Finding the Fourth Proportional to 223,582.82, 308,544.06 and 128,089.89

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Solution

The fourth proportional to 223,582.82, 308,544.06 and 128,089.89 is: 176,763.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,582.82 : 308,544.06 = 128,089.89 : x
  2. Step 2: Convert to fraction form
    223,582.82/308,544.06 = 128,089.89/x
  3. Step 3: Cross multiply
    223,582.82x = 308,544.06 × 128,089.89
  4. Step 4: Simplify right side
    223,582.82x = 39,521,374,705.55
  5. Step 5: Solve for x
    x = 39,521,374,705.55/223,582.82
  6. Step 6: Final answer
    x = 176,763.92

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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.