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Finding the Fourth Proportional to 330,303.12, 455,815.80 and 179,401.20

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Solution

The fourth proportional to 330,303.12, 455,815.80 and 179,401.20 is: 247,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,303.12 : 455,815.80 = 179,401.20 : x
  2. Step 2: Convert to fraction form
    330,303.12/455,815.80 = 179,401.20/x
  3. Step 3: Cross multiply
    330,303.12x = 455,815.80 × 179,401.20
  4. Step 4: Simplify right side
    330,303.12x = 81,773,901,498.96
  5. Step 5: Solve for x
    x = 81,773,901,498.96/330,303.12
  6. Step 6: Final answer
    x = 247,572.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.