Home / 312,126,428-468,188,305.32-78,959,347.04

Finding the Fourth Proportional to 312,126,428, 468,188,305.32 and 78,959,347.04

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Solution

The fourth proportional to 312,126,428, 468,188,305.32 and 78,959,347.04 is: 118,438,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,126,428 : 468,188,305.32 = 78,959,347.04 : x
  2. Step 2: Convert to fraction form
    312,126,428/468,188,305.32 = 78,959,347.04/x
  3. Step 3: Cross multiply
    312,126,428x = 468,188,305.32 × 78,959,347.04
  4. Step 4: Simplify right side
    312,126,428x = 36,967,842,879,831,360
  5. Step 5: Solve for x
    x = 36,967,842,879,831,360/312,126,428
  6. Step 6: Final answer
    x = 118,438,682.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.