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Finding the Fourth Proportional to 330,865.70, 496,298.55 and 81,547.70

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Solution

The fourth proportional to 330,865.70, 496,298.55 and 81,547.70 is: 122,321.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,865.70 : 496,298.55 = 81,547.70 : x
  2. Step 2: Convert to fraction form
    330,865.70/496,298.55 = 81,547.70/x
  3. Step 3: Cross multiply
    330,865.70x = 496,298.55 × 81,547.70
  4. Step 4: Simplify right side
    330,865.70x = 40,472,005,265.84
  5. Step 5: Solve for x
    x = 40,472,005,265.84/330,865.70
  6. Step 6: Final answer
    x = 122,321.55

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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.