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Finding the Fourth Proportional to 288,528.67, 432,825.81 and 99,003.25

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Solution

The fourth proportional to 288,528.67, 432,825.81 and 99,003.25 is: 148,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,528.67 : 432,825.81 = 99,003.25 : x
  2. Step 2: Convert to fraction form
    288,528.67/432,825.81 = 99,003.25/x
  3. Step 3: Cross multiply
    288,528.67x = 432,825.81 × 99,003.25
  4. Step 4: Simplify right side
    288,528.67x = 42,851,161,873.88
  5. Step 5: Solve for x
    x = 42,851,161,873.88/288,528.67
  6. Step 6: Final answer
    x = 148,516.13

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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.