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Finding the Fourth Proportional to 242,887.32, 363,644.37 and 128,775.06

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Solution

The fourth proportional to 242,887.32, 363,644.37 and 128,775.06 is: 192,798.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,887.32 : 363,644.37 = 128,775.06 : x
  2. Step 2: Convert to fraction form
    242,887.32/363,644.37 = 128,775.06/x
  3. Step 3: Cross multiply
    242,887.32x = 363,644.37 × 128,775.06
  4. Step 4: Simplify right side
    242,887.32x = 46,828,325,565.41
  5. Step 5: Solve for x
    x = 46,828,325,565.41/242,887.32
  6. Step 6: Final answer
    x = 192,798.56

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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.