Home / 305,465,456.85-421,631,158.86-199,634,792.46

Finding the Fourth Proportional to 305,465,456.85, 421,631,158.86 and 199,634,792.46

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Solution

The fourth proportional to 305,465,456.85, 421,631,158.86 and 199,634,792.46 is: 275,554,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,465,456.85 : 421,631,158.86 = 199,634,792.46 : x
  2. Step 2: Convert to fraction form
    305,465,456.85/421,631,158.86 = 199,634,792.46/x
  3. Step 3: Cross multiply
    305,465,456.85x = 421,631,158.86 × 199,634,792.46
  4. Step 4: Simplify right side
    305,465,456.85x = 84,172,248,893,685,392
  5. Step 5: Solve for x
    x = 84,172,248,893,685,392/305,465,456.85
  6. Step 6: Final answer
    x = 275,554,066.77

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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.