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Finding the Fourth Proportional to 297,287.57, 445,999.47 and 128,836.17

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Solution

The fourth proportional to 297,287.57, 445,999.47 and 128,836.17 is: 193,283.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,287.57 : 445,999.47 = 128,836.17 : x
  2. Step 2: Convert to fraction form
    297,287.57/445,999.47 = 128,836.17/x
  3. Step 3: Cross multiply
    297,287.57x = 445,999.47 × 128,836.17
  4. Step 4: Simplify right side
    297,287.57x = 57,460,863,536.83
  5. Step 5: Solve for x
    x = 57,460,863,536.83/297,287.57
  6. Step 6: Final answer
    x = 193,283.77

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1.5x scale

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.