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Finding the Fourth Proportional to 318,888.61, 440,067.47 and 175,648.31

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Solution

The fourth proportional to 318,888.61, 440,067.47 and 175,648.31 is: 242,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,888.61 : 440,067.47 = 175,648.31 : x
  2. Step 2: Convert to fraction form
    318,888.61/440,067.47 = 175,648.31/x
  3. Step 3: Cross multiply
    318,888.61x = 440,067.47 × 175,648.31
  4. Step 4: Simplify right side
    318,888.61x = 77,297,107,391.48
  5. Step 5: Solve for x
    x = 77,297,107,391.48/318,888.61
  6. Step 6: Final answer
    x = 242,395.32

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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.