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Finding the Fourth Proportional to 208,505.16, 287,738.16 and 113,011.02

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Solution

The fourth proportional to 208,505.16, 287,738.16 and 113,011.02 is: 155,955.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,505.16 : 287,738.16 = 113,011.02 : x
  2. Step 2: Convert to fraction form
    208,505.16/287,738.16 = 113,011.02/x
  3. Step 3: Cross multiply
    208,505.16x = 287,738.16 × 113,011.02
  4. Step 4: Simplify right side
    208,505.16x = 32,517,582,954.52
  5. Step 5: Solve for x
    x = 32,517,582,954.52/208,505.16
  6. Step 6: Final answer
    x = 155,955.77

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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.