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Finding the Fourth Proportional to 352,420.72, 486,341.09 and 191,275.77

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Solution

The fourth proportional to 352,420.72, 486,341.09 and 191,275.77 is: 263,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,420.72 : 486,341.09 = 191,275.77 : x
  2. Step 2: Convert to fraction form
    352,420.72/486,341.09 = 191,275.77/x
  3. Step 3: Cross multiply
    352,420.72x = 486,341.09 × 191,275.77
  4. Step 4: Simplify right side
    352,420.72x = 93,025,266,472.39
  5. Step 5: Solve for x
    x = 93,025,266,472.39/352,420.72
  6. Step 6: Final answer
    x = 263,960.83

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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.