Home / 428,389.92-641,563.43-248,094.40

Finding the Fourth Proportional to 428,389.92, 641,563.43 and 248,094.40

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Solution

The fourth proportional to 428,389.92, 641,563.43 and 248,094.40 is: 371,550.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,389.92 : 641,563.43 = 248,094.40 : x
  2. Step 2: Convert to fraction form
    428,389.92/641,563.43 = 248,094.40/x
  3. Step 3: Cross multiply
    428,389.92x = 641,563.43 × 248,094.40
  4. Step 4: Simplify right side
    428,389.92x = 159,168,294,227.79
  5. Step 5: Solve for x
    x = 159,168,294,227.79/428,389.92
  6. Step 6: Final answer
    x = 371,550.05

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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.