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Finding the Fourth Proportional to 608,475.25, 912,518.77 and 209,019.70

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Solution

The fourth proportional to 608,475.25, 912,518.77 and 209,019.70 is: 313,462.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,475.25 : 912,518.77 = 209,019.70 : x
  2. Step 2: Convert to fraction form
    608,475.25/912,518.77 = 209,019.70/x
  3. Step 3: Cross multiply
    608,475.25x = 912,518.77 × 209,019.70
  4. Step 4: Simplify right side
    608,475.25x = 190,734,399,549.77
  5. Step 5: Solve for x
    x = 190,734,399,549.77/608,475.25
  6. Step 6: Final answer
    x = 313,462.87

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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.