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Finding the Fourth Proportional to 305,552.77, 421,740.33 and 208,795.79

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Solution

The fourth proportional to 305,552.77, 421,740.33 and 208,795.79 is: 288,191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,552.77 : 421,740.33 = 208,795.79 : x
  2. Step 2: Convert to fraction form
    305,552.77/421,740.33 = 208,795.79/x
  3. Step 3: Cross multiply
    305,552.77x = 421,740.33 × 208,795.79
  4. Step 4: Simplify right side
    305,552.77x = 88,057,602,681.76
  5. Step 5: Solve for x
    x = 88,057,602,681.76/305,552.77
  6. Step 6: Final answer
    x = 288,191.15

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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.