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Finding the Fourth Proportional to 478,758.28, 660,686.46 and 263,903.02

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Solution

The fourth proportional to 478,758.28, 660,686.46 and 263,903.02 is: 364,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,758.28 : 660,686.46 = 263,903.02 : x
  2. Step 2: Convert to fraction form
    478,758.28/660,686.46 = 263,903.02/x
  3. Step 3: Cross multiply
    478,758.28x = 660,686.46 × 263,903.02
  4. Step 4: Simplify right side
    478,758.28x = 174,357,152,067.11
  5. Step 5: Solve for x
    x = 174,357,152,067.11/478,758.28
  6. Step 6: Final answer
    x = 364,186.19

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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.