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Finding the Fourth Proportional to 297,316.40, 446,032.20 and 128,836.40

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Solution

The fourth proportional to 297,316.40, 446,032.20 and 128,836.40 is: 193,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,316.40 : 446,032.20 = 128,836.40 : x
  2. Step 2: Convert to fraction form
    297,316.40/446,032.20 = 128,836.40/x
  3. Step 3: Cross multiply
    297,316.40x = 446,032.20 × 128,836.40
  4. Step 4: Simplify right side
    297,316.40x = 57,465,182,932.08
  5. Step 5: Solve for x
    x = 57,465,182,932.08/297,316.40
  6. Step 6: Final answer
    x = 193,279.56

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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.