Home / 286,219.20-429,542.10-109,072.20

Finding the Fourth Proportional to 286,219.20, 429,542.10 and 109,072.20

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Solution

The fourth proportional to 286,219.20, 429,542.10 and 109,072.20 is: 163,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,219.20 : 429,542.10 = 109,072.20 : x
  2. Step 2: Convert to fraction form
    286,219.20/429,542.10 = 109,072.20/x
  3. Step 3: Cross multiply
    286,219.20x = 429,542.10 × 109,072.20
  4. Step 4: Simplify right side
    286,219.20x = 46,851,101,839.62
  5. Step 5: Solve for x
    x = 46,851,101,839.62/286,219.20
  6. Step 6: Final answer
    x = 163,689.58

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1.5x scale

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.