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Finding the Fourth Proportional to 318,866.31, 440,055.45 and 175,626.32

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Solution

The fourth proportional to 318,866.31, 440,055.45 and 175,626.32 is: 242,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,866.31 : 440,055.45 = 175,626.32 : x
  2. Step 2: Convert to fraction form
    318,866.31/440,055.45 = 175,626.32/x
  3. Step 3: Cross multiply
    318,866.31x = 440,055.45 × 175,626.32
  4. Step 4: Simplify right side
    318,866.31x = 77,285,317,079.17
  5. Step 5: Solve for x
    x = 77,285,317,079.17/318,866.31
  6. Step 6: Final answer
    x = 242,375.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.