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Finding the Fourth Proportional to 248,859.80, 373,289.70 and 154,165.40

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Solution

The fourth proportional to 248,859.80, 373,289.70 and 154,165.40 is: 231,248.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,859.80 : 373,289.70 = 154,165.40 : x
  2. Step 2: Convert to fraction form
    248,859.80/373,289.70 = 154,165.40/x
  3. Step 3: Cross multiply
    248,859.80x = 373,289.70 × 154,165.40
  4. Step 4: Simplify right side
    248,859.80x = 57,548,355,916.38
  5. Step 5: Solve for x
    x = 57,548,355,916.38/248,859.80
  6. Step 6: Final answer
    x = 231,248.10

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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.