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Finding the Fourth Proportional to 238,340.32, 328,912.32 and 130,912.84

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Solution

The fourth proportional to 238,340.32, 328,912.32 and 130,912.84 is: 180,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,340.32 : 328,912.32 = 130,912.84 : x
  2. Step 2: Convert to fraction form
    238,340.32/328,912.32 = 130,912.84/x
  3. Step 3: Cross multiply
    238,340.32x = 328,912.32 × 130,912.84
  4. Step 4: Simplify right side
    238,340.32x = 43,058,845,922.19
  5. Step 5: Solve for x
    x = 43,058,845,922.19/238,340.32
  6. Step 6: Final answer
    x = 180,661.19

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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.