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Finding the Fourth Proportional to 290,528.40, 400,976.84 and 242,053.54

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Solution

The fourth proportional to 290,528.40, 400,976.84 and 242,053.54 is: 334,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,528.40 : 400,976.84 = 242,053.54 : x
  2. Step 2: Convert to fraction form
    290,528.40/400,976.84 = 242,053.54/x
  3. Step 3: Cross multiply
    290,528.40x = 400,976.84 × 242,053.54
  4. Step 4: Simplify right side
    290,528.40x = 97,057,863,580.01
  5. Step 5: Solve for x
    x = 97,057,863,580.01/290,528.40
  6. Step 6: Final answer
    x = 334,073.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.