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Finding the Fourth Proportional to 238,340.18, 328,912.14 and 130,912.72

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Solution

The fourth proportional to 238,340.18, 328,912.14 and 130,912.72 is: 180,661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,340.18 : 328,912.14 = 130,912.72 : x
  2. Step 2: Convert to fraction form
    238,340.18/328,912.14 = 130,912.72/x
  3. Step 3: Cross multiply
    238,340.18x = 328,912.14 × 130,912.72
  4. Step 4: Simplify right side
    238,340.18x = 43,058,782,888.42
  5. Step 5: Solve for x
    x = 43,058,782,888.42/238,340.18
  6. Step 6: Final answer
    x = 180,661.03

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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.