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Finding the Fourth Proportional to 605,291.40, 907,718.40 and 245,311.20

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Solution

The fourth proportional to 605,291.40, 907,718.40 and 245,311.20 is: 367,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,291.40 : 907,718.40 = 245,311.20 : x
  2. Step 2: Convert to fraction form
    605,291.40/907,718.40 = 245,311.20/x
  3. Step 3: Cross multiply
    605,291.40x = 907,718.40 × 245,311.20
  4. Step 4: Simplify right side
    605,291.40x = 222,673,489,966.08
  5. Step 5: Solve for x
    x = 222,673,489,966.08/605,291.40
  6. Step 6: Final answer
    x = 367,878.17

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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.