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Finding the Fourth Proportional to 223,915.50, 335,084.40 and 139,715.30

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Solution

The fourth proportional to 223,915.50, 335,084.40 and 139,715.30 is: 209,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,915.50 : 335,084.40 = 139,715.30 : x
  2. Step 2: Convert to fraction form
    223,915.50/335,084.40 = 139,715.30/x
  3. Step 3: Cross multiply
    223,915.50x = 335,084.40 × 139,715.30
  4. Step 4: Simplify right side
    223,915.50x = 46,816,417,471.32
  5. Step 5: Solve for x
    x = 46,816,417,471.32/223,915.50
  6. Step 6: Final answer
    x = 209,080.74

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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.