Home / 398,196,340.96-549,482,890.44-221,976,541.48

Finding the Fourth Proportional to 398,196,340.96, 549,482,890.44 and 221,976,541.48

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Solution

The fourth proportional to 398,196,340.96, 549,482,890.44 and 221,976,541.48 is: 306,311,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,196,340.96 : 549,482,890.44 = 221,976,541.48 : x
  2. Step 2: Convert to fraction form
    398,196,340.96/549,482,890.44 = 221,976,541.48/x
  3. Step 3: Cross multiply
    398,196,340.96x = 549,482,890.44 × 221,976,541.48
  4. Step 4: Simplify right side
    398,196,340.96x = 121,972,311,622,304,960
  5. Step 5: Solve for x
    x = 121,972,311,622,304,960/398,196,340.96
  6. Step 6: Final answer
    x = 306,311,985.01

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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.