Home / 256,317,665.38-353,720,076.59-138,842,995.62

Finding the Fourth Proportional to 256,317,665.38, 353,720,076.59 and 138,842,995.62

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Solution

The fourth proportional to 256,317,665.38, 353,720,076.59 and 138,842,995.62 is: 191,604,253.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,317,665.38 : 353,720,076.59 = 138,842,995.62 : x
  2. Step 2: Convert to fraction form
    256,317,665.38/353,720,076.59 = 138,842,995.62/x
  3. Step 3: Cross multiply
    256,317,665.38x = 353,720,076.59 × 138,842,995.62
  4. Step 4: Simplify right side
    256,317,665.38x = 49,111,555,044,691,432
  5. Step 5: Solve for x
    x = 49,111,555,044,691,432/256,317,665.38
  6. Step 6: Final answer
    x = 191,604,253.93

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1.5x scale

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.