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Finding the Fourth Proportional to 330,870.96, 496,243.12 and 128,467.06

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Solution

The fourth proportional to 330,870.96, 496,243.12 and 128,467.06 is: 192,676.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,870.96 : 496,243.12 = 128,467.06 : x
  2. Step 2: Convert to fraction form
    330,870.96/496,243.12 = 128,467.06/x
  3. Step 3: Cross multiply
    330,870.96x = 496,243.12 × 128,467.06
  4. Step 4: Simplify right side
    330,870.96x = 63,750,894,671.63
  5. Step 5: Solve for x
    x = 63,750,894,671.63/330,870.96
  6. Step 6: Final answer
    x = 192,676.00

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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.