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Finding the Fourth Proportional to 259,490.64, 388,477.32 and 234,587.76

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Solution

The fourth proportional to 259,490.64, 388,477.32 and 234,587.76 is: 351,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,490.64 : 388,477.32 = 234,587.76 : x
  2. Step 2: Convert to fraction form
    259,490.64/388,477.32 = 234,587.76/x
  3. Step 3: Cross multiply
    259,490.64x = 388,477.32 × 234,587.76
  4. Step 4: Simplify right side
    259,490.64x = 91,132,024,309.60
  5. Step 5: Solve for x
    x = 91,132,024,309.60/259,490.64
  6. Step 6: Final answer
    x = 351,195.81

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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.