Home / 456,138.32-684,142.25-156,613.28

Finding the Fourth Proportional to 456,138.32, 684,142.25 and 156,613.28

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Solution

The fourth proportional to 456,138.32, 684,142.25 and 156,613.28 is: 234,897.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,138.32 : 684,142.25 = 156,613.28 : x
  2. Step 2: Convert to fraction form
    456,138.32/684,142.25 = 156,613.28/x
  3. Step 3: Cross multiply
    456,138.32x = 684,142.25 × 156,613.28
  4. Step 4: Simplify right side
    456,138.32x = 107,145,758,338.37
  5. Step 5: Solve for x
    x = 107,145,758,338.37/456,138.32
  6. Step 6: Final answer
    x = 234,897.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.