Home / 256,013,789.16-353,299,959-138,539,106.72

Finding the Fourth Proportional to 256,013,789.16, 353,299,959 and 138,539,106.72

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Solution

The fourth proportional to 256,013,789.16, 353,299,959 and 138,539,106.72 is: 191,184,470.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,013,789.16 : 353,299,959 = 138,539,106.72 : x
  2. Step 2: Convert to fraction form
    256,013,789.16/353,299,959 = 138,539,106.72/x
  3. Step 3: Cross multiply
    256,013,789.16x = 353,299,959 × 138,539,106.72
  4. Step 4: Simplify right side
    256,013,789.16x = 48,945,860,724,072,624
  5. Step 5: Solve for x
    x = 48,945,860,724,072,624/256,013,789.16
  6. Step 6: Final answer
    x = 191,184,470.51

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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.