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Finding the Fourth Proportional to 318,406.20, 439,397.40 and 175,166.40

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Solution

The fourth proportional to 318,406.20, 439,397.40 and 175,166.40 is: 241,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,406.20 : 439,397.40 = 175,166.40 : x
  2. Step 2: Convert to fraction form
    318,406.20/439,397.40 = 175,166.40/x
  3. Step 3: Cross multiply
    318,406.20x = 439,397.40 × 175,166.40
  4. Step 4: Simplify right side
    318,406.20x = 76,967,660,727.36
  5. Step 5: Solve for x
    x = 76,967,660,727.36/318,406.20
  6. Step 6: Final answer
    x = 241,727.90

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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.