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Finding the Fourth Proportional to 312,435.98, 468,653.97 and 87,787.34

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Solution

The fourth proportional to 312,435.98, 468,653.97 and 87,787.34 is: 131,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,435.98 : 468,653.97 = 87,787.34 : x
  2. Step 2: Convert to fraction form
    312,435.98/468,653.97 = 87,787.34/x
  3. Step 3: Cross multiply
    312,435.98x = 468,653.97 × 87,787.34
  4. Step 4: Simplify right side
    312,435.98x = 41,141,885,150.12
  5. Step 5: Solve for x
    x = 41,141,885,150.12/312,435.98
  6. Step 6: Final answer
    x = 131,681.01

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1.5x scale

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.