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Finding the Fourth Proportional to 297,281.91, 445,990.97 and 128,830.50

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Solution

The fourth proportional to 297,281.91, 445,990.97 and 128,830.50 is: 193,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,281.91 : 445,990.97 = 128,830.50 : x
  2. Step 2: Convert to fraction form
    297,281.91/445,990.97 = 128,830.50/x
  3. Step 3: Cross multiply
    297,281.91x = 445,990.97 × 128,830.50
  4. Step 4: Simplify right side
    297,281.91x = 57,457,239,660.59
  5. Step 5: Solve for x
    x = 57,457,239,660.59/297,281.91
  6. Step 6: Final answer
    x = 193,275.26

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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.