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Finding the Fourth Proportional to 399,399.30, 598,114.80 and 265,554.90

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Solution

The fourth proportional to 399,399.30, 598,114.80 and 265,554.90 is: 397,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,399.30 : 598,114.80 = 265,554.90 : x
  2. Step 2: Convert to fraction form
    399,399.30/598,114.80 = 265,554.90/x
  3. Step 3: Cross multiply
    399,399.30x = 598,114.80 × 265,554.90
  4. Step 4: Simplify right side
    399,399.30x = 158,832,315,902.52
  5. Step 5: Solve for x
    x = 158,832,315,902.52/399,399.30
  6. Step 6: Final answer
    x = 397,678.00

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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.