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Finding the Fourth Proportional to 442,540.64, 610,802.78 and 281,364.20

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Solution

The fourth proportional to 442,540.64, 610,802.78 and 281,364.20 is: 388,344.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,540.64 : 610,802.78 = 281,364.20 : x
  2. Step 2: Convert to fraction form
    442,540.64/610,802.78 = 281,364.20/x
  3. Step 3: Cross multiply
    442,540.64x = 610,802.78 × 281,364.20
  4. Step 4: Simplify right side
    442,540.64x = 171,858,035,552.48
  5. Step 5: Solve for x
    x = 171,858,035,552.48/442,540.64
  6. Step 6: Final answer
    x = 388,344.08

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1.5x scale

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.