Home / 455,140.20-628,091.30-253,935.72

Finding the Fourth Proportional to 455,140.20, 628,091.30 and 253,935.72

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Solution

The fourth proportional to 455,140.20, 628,091.30 and 253,935.72 is: 350,430.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,140.20 : 628,091.30 = 253,935.72 : x
  2. Step 2: Convert to fraction form
    455,140.20/628,091.30 = 253,935.72/x
  3. Step 3: Cross multiply
    455,140.20x = 628,091.30 × 253,935.72
  4. Step 4: Simplify right side
    455,140.20x = 159,494,816,491.24
  5. Step 5: Solve for x
    x = 159,494,816,491.24/455,140.20
  6. Step 6: Final answer
    x = 350,430.08

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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.