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Finding the Fourth Proportional to 285,614.16, 394,145.13 and 156,559.83

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Solution

The fourth proportional to 285,614.16, 394,145.13 and 156,559.83 is: 216,051.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,614.16 : 394,145.13 = 156,559.83 : x
  2. Step 2: Convert to fraction form
    285,614.16/394,145.13 = 156,559.83/x
  3. Step 3: Cross multiply
    285,614.16x = 394,145.13 × 156,559.83
  4. Step 4: Simplify right side
    285,614.16x = 61,707,294,548.13
  5. Step 5: Solve for x
    x = 61,707,294,548.13/285,614.16
  6. Step 6: Final answer
    x = 216,051.24

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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.