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Finding the Fourth Proportional to 352,155.43, 528,264.80 and 99,438.47

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Solution

The fourth proportional to 352,155.43, 528,264.80 and 99,438.47 is: 149,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,155.43 : 528,264.80 = 99,438.47 : x
  2. Step 2: Convert to fraction form
    352,155.43/528,264.80 = 99,438.47/x
  3. Step 3: Cross multiply
    352,155.43x = 528,264.80 × 99,438.47
  4. Step 4: Simplify right side
    352,155.43x = 52,529,840,328.34
  5. Step 5: Solve for x
    x = 52,529,840,328.34/352,155.43
  6. Step 6: Final answer
    x = 149,166.64

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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.