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Finding the Fourth Proportional to 608,642.97, 912,786 and 229,290

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Solution

The fourth proportional to 608,642.97, 912,786 and 229,290 is: 343,867.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,642.97 : 912,786 = 229,290 : x
  2. Step 2: Convert to fraction form
    608,642.97/912,786 = 229,290/x
  3. Step 3: Cross multiply
    608,642.97x = 912,786 × 229,290
  4. Step 4: Simplify right side
    608,642.97x = 209,292,701,940
  5. Step 5: Solve for x
    x = 209,292,701,940/608,642.97
  6. Step 6: Final answer
    x = 343,867.77

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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.