Home / 256,130,678.82-353,460,262.28-138,655,922.79

Finding the Fourth Proportional to 256,130,678.82, 353,460,262.28 and 138,655,922.79

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Solution

The fourth proportional to 256,130,678.82, 353,460,262.28 and 138,655,922.79 is: 191,345,133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,130,678.82 : 353,460,262.28 = 138,655,922.79 : x
  2. Step 2: Convert to fraction form
    256,130,678.82/353,460,262.28 = 138,655,922.79/x
  3. Step 3: Cross multiply
    256,130,678.82x = 353,460,262.28 × 138,655,922.79
  4. Step 4: Simplify right side
    256,130,678.82x = 49,009,358,836,028,824
  5. Step 5: Solve for x
    x = 49,009,358,836,028,824/256,130,678.82
  6. Step 6: Final answer
    x = 191,345,133.12

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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.