Home / 286,423.12-429,639-99,440.56

Finding the Fourth Proportional to 286,423.12, 429,639 and 99,440.56

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Solution

The fourth proportional to 286,423.12, 429,639 and 99,440.56 is: 149,162.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,423.12 : 429,639 = 99,440.56 : x
  2. Step 2: Convert to fraction form
    286,423.12/429,639 = 99,440.56/x
  3. Step 3: Cross multiply
    286,423.12x = 429,639 × 99,440.56
  4. Step 4: Simplify right side
    286,423.12x = 42,723,542,757.84
  5. Step 5: Solve for x
    x = 42,723,542,757.84/286,423.12
  6. Step 6: Final answer
    x = 149,162.34

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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.