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Finding the Fourth Proportional to 297,987.10, 446,970.74 and 129,507.59

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Solution

The fourth proportional to 297,987.10, 446,970.74 and 129,507.59 is: 194,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,987.10 : 446,970.74 = 129,507.59 : x
  2. Step 2: Convert to fraction form
    297,987.10/446,970.74 = 129,507.59/x
  3. Step 3: Cross multiply
    297,987.10x = 446,970.74 × 129,507.59
  4. Step 4: Simplify right side
    297,987.10x = 57,886,103,337.92
  5. Step 5: Solve for x
    x = 57,886,103,337.92/297,987.10
  6. Step 6: Final answer
    x = 194,257.08

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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.