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Finding the Fourth Proportional to 286,371.54, 395,181.60 and 159,055.20

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Solution

The fourth proportional to 286,371.54, 395,181.60 and 159,055.20 is: 219,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,371.54 : 395,181.60 = 159,055.20 : x
  2. Step 2: Convert to fraction form
    286,371.54/395,181.60 = 159,055.20/x
  3. Step 3: Cross multiply
    286,371.54x = 395,181.60 × 159,055.20
  4. Step 4: Simplify right side
    286,371.54x = 62,855,688,424.32
  5. Step 5: Solve for x
    x = 62,855,688,424.32/286,371.54
  6. Step 6: Final answer
    x = 219,490.00

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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.