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Finding the Fourth Proportional to 297,029.60, 445,501.20 and 86,645.60

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Solution

The fourth proportional to 297,029.60, 445,501.20 and 86,645.60 is: 129,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,029.60 : 445,501.20 = 86,645.60 : x
  2. Step 2: Convert to fraction form
    297,029.60/445,501.20 = 86,645.60/x
  3. Step 3: Cross multiply
    297,029.60x = 445,501.20 × 86,645.60
  4. Step 4: Simplify right side
    297,029.60x = 38,600,718,774.72
  5. Step 5: Solve for x
    x = 38,600,718,774.72/297,029.60
  6. Step 6: Final answer
    x = 129,955.80

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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.