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Finding the Fourth Proportional to 230,888.67, 318,623.24 and 128,915.70

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Solution

The fourth proportional to 230,888.67, 318,623.24 and 128,915.70 is: 177,901.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,888.67 : 318,623.24 = 128,915.70 : x
  2. Step 2: Convert to fraction form
    230,888.67/318,623.24 = 128,915.70/x
  3. Step 3: Cross multiply
    230,888.67x = 318,623.24 × 128,915.70
  4. Step 4: Simplify right side
    230,888.67x = 41,075,538,343.16
  5. Step 5: Solve for x
    x = 41,075,538,343.16/230,888.67
  6. Step 6: Final answer
    x = 177,901.92

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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.