Home / 286,363.20-395,186.10-157,307.12

Finding the Fourth Proportional to 286,363.20, 395,186.10 and 157,307.12

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Solution

The fourth proportional to 286,363.20, 395,186.10 and 157,307.12 is: 217,086.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,363.20 : 395,186.10 = 157,307.12 : x
  2. Step 2: Convert to fraction form
    286,363.20/395,186.10 = 157,307.12/x
  3. Step 3: Cross multiply
    286,363.20x = 395,186.10 × 157,307.12
  4. Step 4: Simplify right side
    286,363.20x = 62,165,587,255.03
  5. Step 5: Solve for x
    x = 62,165,587,255.03/286,363.20
  6. Step 6: Final answer
    x = 217,086.51

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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.