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Finding the Fourth Proportional to 352,643.40, 528,965.10 and 299,499.30

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Solution

The fourth proportional to 352,643.40, 528,965.10 and 299,499.30 is: 449,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,643.40 : 528,965.10 = 299,499.30 : x
  2. Step 2: Convert to fraction form
    352,643.40/528,965.10 = 299,499.30/x
  3. Step 3: Cross multiply
    352,643.40x = 528,965.10 × 299,499.30
  4. Step 4: Simplify right side
    352,643.40x = 158,424,677,174.43
  5. Step 5: Solve for x
    x = 158,424,677,174.43/352,643.40
  6. Step 6: Final answer
    x = 449,248.95

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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.