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Finding the Fourth Proportional to 352,438.64, 486,352.28 and 191,290.24

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Solution

The fourth proportional to 352,438.64, 486,352.28 and 191,290.24 is: 263,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,438.64 : 486,352.28 = 191,290.24 : x
  2. Step 2: Convert to fraction form
    352,438.64/486,352.28 = 191,290.24/x
  3. Step 3: Cross multiply
    352,438.64x = 486,352.28 × 191,290.24
  4. Step 4: Simplify right side
    352,438.64x = 93,034,443,628.09
  5. Step 5: Solve for x
    x = 93,034,443,628.09/352,438.64
  6. Step 6: Final answer
    x = 263,973.45

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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.