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Finding the Fourth Proportional to 352,019.30, 528,065.86 and 99,297.79

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Solution

The fourth proportional to 352,019.30, 528,065.86 and 99,297.79 is: 148,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,019.30 : 528,065.86 = 99,297.79 : x
  2. Step 2: Convert to fraction form
    352,019.30/528,065.86 = 99,297.79/x
  3. Step 3: Cross multiply
    352,019.30x = 528,065.86 × 99,297.79
  4. Step 4: Simplify right side
    352,019.30x = 52,435,772,872.45
  5. Step 5: Solve for x
    x = 52,435,772,872.45/352,019.30
  6. Step 6: Final answer
    x = 148,957.10

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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.