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Finding the Fourth Proportional to 608,716.67, 913,065.74 and 209,360.90

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Solution

The fourth proportional to 608,716.67, 913,065.74 and 209,360.90 is: 314,038.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,716.67 : 913,065.74 = 209,360.90 : x
  2. Step 2: Convert to fraction form
    608,716.67/913,065.74 = 209,360.90/x
  3. Step 3: Cross multiply
    608,716.67x = 913,065.74 × 209,360.90
  4. Step 4: Simplify right side
    608,716.67x = 191,160,267,695.36
  5. Step 5: Solve for x
    x = 191,160,267,695.36/608,716.67
  6. Step 6: Final answer
    x = 314,038.17

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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.