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Finding the Fourth Proportional to 352,420.42, 486,340.64 and 191,275.45

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Solution

The fourth proportional to 352,420.42, 486,340.64 and 191,275.45 is: 263,960.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,420.42 : 486,340.64 = 191,275.45 : x
  2. Step 2: Convert to fraction form
    352,420.42/486,340.64 = 191,275.45/x
  3. Step 3: Cross multiply
    352,420.42x = 486,340.64 × 191,275.45
  4. Step 4: Simplify right side
    352,420.42x = 93,025,023,812.91
  5. Step 5: Solve for x
    x = 93,025,023,812.91/352,420.42
  6. Step 6: Final answer
    x = 263,960.37

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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.