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Finding the Fourth Proportional to 646,341.93, 969,955.74 and 225,617.76

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Solution

The fourth proportional to 646,341.93, 969,955.74 and 225,617.76 is: 338,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,341.93 : 969,955.74 = 225,617.76 : x
  2. Step 2: Convert to fraction form
    646,341.93/969,955.74 = 225,617.76/x
  3. Step 3: Cross multiply
    646,341.93x = 969,955.74 × 225,617.76
  4. Step 4: Simplify right side
    646,341.93x = 218,839,241,357.94
  5. Step 5: Solve for x
    x = 218,839,241,357.94/646,341.93
  6. Step 6: Final answer
    x = 338,581.22

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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.