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Finding the Fourth Proportional to 202,485.64, 279,433.14 and 117,602.70

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Solution

The fourth proportional to 202,485.64, 279,433.14 and 117,602.70 is: 162,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,485.64 : 279,433.14 = 117,602.70 : x
  2. Step 2: Convert to fraction form
    202,485.64/279,433.14 = 117,602.70/x
  3. Step 3: Cross multiply
    202,485.64x = 279,433.14 × 117,602.70
  4. Step 4: Simplify right side
    202,485.64x = 32,862,091,145.46
  5. Step 5: Solve for x
    x = 32,862,091,145.46/202,485.64
  6. Step 6: Final answer
    x = 162,293.44

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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.