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Finding the Fourth Proportional to 289,078.64, 433,510.20 and 99,486.02

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Solution

The fourth proportional to 289,078.64, 433,510.20 and 99,486.02 is: 149,191.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,078.64 : 433,510.20 = 99,486.02 : x
  2. Step 2: Convert to fraction form
    289,078.64/433,510.20 = 99,486.02/x
  3. Step 3: Cross multiply
    289,078.64x = 433,510.20 × 99,486.02
  4. Step 4: Simplify right side
    289,078.64x = 43,128,204,427.40
  5. Step 5: Solve for x
    x = 43,128,204,427.40/289,078.64
  6. Step 6: Final answer
    x = 149,191.94

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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.