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Finding the Fourth Proportional to 398,145.60, 597,218.40 and 248,554.80

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Solution

The fourth proportional to 398,145.60, 597,218.40 and 248,554.80 is: 372,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,145.60 : 597,218.40 = 248,554.80 : x
  2. Step 2: Convert to fraction form
    398,145.60/597,218.40 = 248,554.80/x
  3. Step 3: Cross multiply
    398,145.60x = 597,218.40 × 248,554.80
  4. Step 4: Simplify right side
    398,145.60x = 148,441,499,968.32
  5. Step 5: Solve for x
    x = 148,441,499,968.32/398,145.60
  6. Step 6: Final answer
    x = 372,832.20

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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.