Home / 285,307.90-393,736.77-157,983.48

Finding the Fourth Proportional to 285,307.90, 393,736.77 and 157,983.48

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Solution

The fourth proportional to 285,307.90, 393,736.77 and 157,983.48 is: 218,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,307.90 : 393,736.77 = 157,983.48 : x
  2. Step 2: Convert to fraction form
    285,307.90/393,736.77 = 157,983.48/x
  3. Step 3: Cross multiply
    285,307.90x = 393,736.77 × 157,983.48
  4. Step 4: Simplify right side
    285,307.90x = 62,203,905,128.56
  5. Step 5: Solve for x
    x = 62,203,905,128.56/285,307.90
  6. Step 6: Final answer
    x = 218,023.78

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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.