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Finding the Fourth Proportional to 608,616.56, 912,985.67 and 209,204.75

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Solution

The fourth proportional to 608,616.56, 912,985.67 and 209,204.75 is: 313,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,616.56 : 912,985.67 = 209,204.75 : x
  2. Step 2: Convert to fraction form
    608,616.56/912,985.67 = 209,204.75/x
  3. Step 3: Cross multiply
    608,616.56x = 912,985.67 × 209,204.75
  4. Step 4: Simplify right side
    608,616.56x = 191,000,941,651.41
  5. Step 5: Solve for x
    x = 191,000,941,651.41/608,616.56
  6. Step 6: Final answer
    x = 313,828.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.