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Finding the Fourth Proportional to 265,570.80, 399,133.80 and 231,356.40

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Solution

The fourth proportional to 265,570.80, 399,133.80 and 231,356.40 is: 347,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,570.80 : 399,133.80 = 231,356.40 : x
  2. Step 2: Convert to fraction form
    265,570.80/399,133.80 = 231,356.40/x
  3. Step 3: Cross multiply
    265,570.80x = 399,133.80 × 231,356.40
  4. Step 4: Simplify right side
    265,570.80x = 92,342,159,086.32
  5. Step 5: Solve for x
    x = 92,342,159,086.32/265,570.80
  6. Step 6: Final answer
    x = 347,712.02

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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.