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Finding the Fourth Proportional to 553,072.13, 763,184.98 and 308,048.67

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Solution

The fourth proportional to 553,072.13, 763,184.98 and 308,048.67 is: 425,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,072.13 : 763,184.98 = 308,048.67 : x
  2. Step 2: Convert to fraction form
    553,072.13/763,184.98 = 308,048.67/x
  3. Step 3: Cross multiply
    553,072.13x = 763,184.98 × 308,048.67
  4. Step 4: Simplify right side
    553,072.13x = 235,098,120,144.80
  5. Step 5: Solve for x
    x = 235,098,120,144.80/553,072.13
  6. Step 6: Final answer
    x = 425,076.78

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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.