Home / 297,280.40-445,988.72-128,829

Finding the Fourth Proportional to 297,280.40, 445,988.72 and 128,829

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Solution

The fourth proportional to 297,280.40, 445,988.72 and 128,829 is: 193,273.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,280.40 : 445,988.72 = 128,829 : x
  2. Step 2: Convert to fraction form
    297,280.40/445,988.72 = 128,829/x
  3. Step 3: Cross multiply
    297,280.40x = 445,988.72 × 128,829
  4. Step 4: Simplify right side
    297,280.40x = 57,456,280,808.88
  5. Step 5: Solve for x
    x = 57,456,280,808.88/297,280.40
  6. Step 6: Final answer
    x = 193,273.02

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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.