Home / 285,253.09-393,663.77-157,942.69

Finding the Fourth Proportional to 285,253.09, 393,663.77 and 157,942.69

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Solution

The fourth proportional to 285,253.09, 393,663.77 and 157,942.69 is: 217,968.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,253.09 : 393,663.77 = 157,942.69 : x
  2. Step 2: Convert to fraction form
    285,253.09/393,663.77 = 157,942.69/x
  3. Step 3: Cross multiply
    285,253.09x = 393,663.77 × 157,942.69
  4. Step 4: Simplify right side
    285,253.09x = 62,176,313,215.88
  5. Step 5: Solve for x
    x = 62,176,313,215.88/285,253.09
  6. Step 6: Final answer
    x = 217,968.94

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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.