Home / 398,538,031.86-549,980,956.89-222,325,886.88

Finding the Fourth Proportional to 398,538,031.86, 549,980,956.89 and 222,325,886.88

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Solution

The fourth proportional to 398,538,031.86, 549,980,956.89 and 222,325,886.88 is: 306,808,872.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,538,031.86 : 549,980,956.89 = 222,325,886.88 : x
  2. Step 2: Convert to fraction form
    398,538,031.86/549,980,956.89 = 222,325,886.88/x
  3. Step 3: Cross multiply
    398,538,031.86x = 549,980,956.89 × 222,325,886.88
  4. Step 4: Simplify right side
    398,538,031.86x = 122,275,004,007,680,288
  5. Step 5: Solve for x
    x = 122,275,004,007,680,288/398,538,031.86
  6. Step 6: Final answer
    x = 306,808,872.01

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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.