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Finding the Fourth Proportional to 285,055.52, 393,314.13 and 170,316.92

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Solution

The fourth proportional to 285,055.52, 393,314.13 and 170,316.92 is: 235,000.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,055.52 : 393,314.13 = 170,316.92 : x
  2. Step 2: Convert to fraction form
    285,055.52/393,314.13 = 170,316.92/x
  3. Step 3: Cross multiply
    285,055.52x = 393,314.13 × 170,316.92
  4. Step 4: Simplify right side
    285,055.52x = 66,988,052,197.36
  5. Step 5: Solve for x
    x = 66,988,052,197.36/285,055.52
  6. Step 6: Final answer
    x = 235,000.02

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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.