Home / 265,964,678.20-398,947,017.30-163,928,006.20

Finding the Fourth Proportional to 265,964,678.20, 398,947,017.30 and 163,928,006.20

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Solution

The fourth proportional to 265,964,678.20, 398,947,017.30 and 163,928,006.20 is: 245,892,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,964,678.20 : 398,947,017.30 = 163,928,006.20 : x
  2. Step 2: Convert to fraction form
    265,964,678.20/398,947,017.30 = 163,928,006.20/x
  3. Step 3: Cross multiply
    265,964,678.20x = 398,947,017.30 × 163,928,006.20
  4. Step 4: Simplify right side
    265,964,678.20x = 65,398,589,125,425,904
  5. Step 5: Solve for x
    x = 65,398,589,125,425,904/265,964,678.20
  6. Step 6: Final answer
    x = 245,892,009.30

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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.