Home / 256,244,700.78-353,615,926.32-138,767,342.67

Finding the Fourth Proportional to 256,244,700.78, 353,615,926.32 and 138,767,342.67

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Solution

The fourth proportional to 256,244,700.78, 353,615,926.32 and 138,767,342.67 is: 191,497,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,244,700.78 : 353,615,926.32 = 138,767,342.67 : x
  2. Step 2: Convert to fraction form
    256,244,700.78/353,615,926.32 = 138,767,342.67/x
  3. Step 3: Cross multiply
    256,244,700.78x = 353,615,926.32 × 138,767,342.67
  4. Step 4: Simplify right side
    256,244,700.78x = 49,070,342,421,216,904
  5. Step 5: Solve for x
    x = 49,070,342,421,216,904/256,244,700.78
  6. Step 6: Final answer
    x = 191,497,979.36

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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.