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Finding the Fourth Proportional to 202,208.70, 279,047.23 and 111,570.31

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Solution

The fourth proportional to 202,208.70, 279,047.23 and 111,570.31 is: 153,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,208.70 : 279,047.23 = 111,570.31 : x
  2. Step 2: Convert to fraction form
    202,208.70/279,047.23 = 111,570.31/x
  3. Step 3: Cross multiply
    202,208.70x = 279,047.23 × 111,570.31
  4. Step 4: Simplify right side
    202,208.70x = 31,133,386,025.62
  5. Step 5: Solve for x
    x = 31,133,386,025.62/202,208.70
  6. Step 6: Final answer
    x = 153,966.60

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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.