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Finding the Fourth Proportional to 342,430.80, 472,542.56 and 189,466.56

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Solution

The fourth proportional to 342,430.80, 472,542.56 and 189,466.56 is: 261,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,430.80 : 472,542.56 = 189,466.56 : x
  2. Step 2: Convert to fraction form
    342,430.80/472,542.56 = 189,466.56/x
  3. Step 3: Cross multiply
    342,430.80x = 472,542.56 × 189,466.56
  4. Step 4: Simplify right side
    342,430.80x = 89,531,013,296.79
  5. Step 5: Solve for x
    x = 89,531,013,296.79/342,430.80
  6. Step 6: Final answer
    x = 261,457.24

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1.5x scale

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.