Home / 456,140.40-684,145.80-140,629.20

Finding the Fourth Proportional to 456,140.40, 684,145.80 and 140,629.20

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Solution

The fourth proportional to 456,140.40, 684,145.80 and 140,629.20 is: 210,923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,140.40 : 684,145.80 = 140,629.20 : x
  2. Step 2: Convert to fraction form
    456,140.40/684,145.80 = 140,629.20/x
  3. Step 3: Cross multiply
    456,140.40x = 684,145.80 × 140,629.20
  4. Step 4: Simplify right side
    456,140.40x = 96,210,876,537.36
  5. Step 5: Solve for x
    x = 96,210,876,537.36/456,140.40
  6. Step 6: Final answer
    x = 210,923.82

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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.