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Finding the Fourth Proportional to 297,291.62, 446,005.54 and 128,840.20

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Solution

The fourth proportional to 297,291.62, 446,005.54 and 128,840.20 is: 193,289.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,291.62 : 446,005.54 = 128,840.20 : x
  2. Step 2: Convert to fraction form
    297,291.62/446,005.54 = 128,840.20/x
  3. Step 3: Cross multiply
    297,291.62x = 446,005.54 × 128,840.20
  4. Step 4: Simplify right side
    297,291.62x = 57,463,442,974.71
  5. Step 5: Solve for x
    x = 57,463,442,974.71/297,291.62
  6. Step 6: Final answer
    x = 193,289.82

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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.