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Finding the Fourth Proportional to 285,216.65, 393,603.63 and 156,152.96

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Solution

The fourth proportional to 285,216.65, 393,603.63 and 156,152.96 is: 215,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,216.65 : 393,603.63 = 156,152.96 : x
  2. Step 2: Convert to fraction form
    285,216.65/393,603.63 = 156,152.96/x
  3. Step 3: Cross multiply
    285,216.65x = 393,603.63 × 156,152.96
  4. Step 4: Simplify right side
    285,216.65x = 61,462,369,923.23
  5. Step 5: Solve for x
    x = 61,462,369,923.23/285,216.65
  6. Step 6: Final answer
    x = 215,493.63

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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.