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Finding the Fourth Proportional to 390,772.52, 585,240.22 and 190,465.18

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Solution

The fourth proportional to 390,772.52, 585,240.22 and 190,465.18 is: 285,250.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,772.52 : 585,240.22 = 190,465.18 : x
  2. Step 2: Convert to fraction form
    390,772.52/585,240.22 = 190,465.18/x
  3. Step 3: Cross multiply
    390,772.52x = 585,240.22 × 190,465.18
  4. Step 4: Simplify right side
    390,772.52x = 111,467,883,845.54
  5. Step 5: Solve for x
    x = 111,467,883,845.54/390,772.52
  6. Step 6: Final answer
    x = 285,250.06

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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.