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Finding the Fourth Proportional to 318,854.32, 440,016.20 and 175,611.31

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Solution

The fourth proportional to 318,854.32, 440,016.20 and 175,611.31 is: 242,342.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,854.32 : 440,016.20 = 175,611.31 : x
  2. Step 2: Convert to fraction form
    318,854.32/440,016.20 = 175,611.31/x
  3. Step 3: Cross multiply
    318,854.32x = 440,016.20 × 175,611.31
  4. Step 4: Simplify right side
    318,854.32x = 77,271,819,103.14
  5. Step 5: Solve for x
    x = 77,271,819,103.14/318,854.32
  6. Step 6: Final answer
    x = 242,342.08

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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.