Home / 256,130,537.78-353,460,067.26-138,655,780.86

Finding the Fourth Proportional to 256,130,537.78, 353,460,067.26 and 138,655,780.86

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Solution

The fourth proportional to 256,130,537.78, 353,460,067.26 and 138,655,780.86 is: 191,344,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,130,537.78 : 353,460,067.26 = 138,655,780.86 : x
  2. Step 2: Convert to fraction form
    256,130,537.78/353,460,067.26 = 138,655,780.86/x
  3. Step 3: Cross multiply
    256,130,537.78x = 353,460,067.26 × 138,655,780.86
  4. Step 4: Simplify right side
    256,130,537.78x = 49,009,281,628,763,424
  5. Step 5: Solve for x
    x = 49,009,281,628,763,424/256,130,537.78
  6. Step 6: Final answer
    x = 191,344,937.05

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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.