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Finding the Fourth Proportional to 371,638.24, 557,457.60 and 134,980.48

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Solution

The fourth proportional to 371,638.24, 557,457.60 and 134,980.48 is: 202,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,638.24 : 557,457.60 = 134,980.48 : x
  2. Step 2: Convert to fraction form
    371,638.24/557,457.60 = 134,980.48/x
  3. Step 3: Cross multiply
    371,638.24x = 557,457.60 × 134,980.48
  4. Step 4: Simplify right side
    371,638.24x = 75,245,894,427.65
  5. Step 5: Solve for x
    x = 75,245,894,427.65/371,638.24
  6. Step 6: Final answer
    x = 202,470.81

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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.