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Finding the Fourth Proportional to 330,865.60, 496,298.40 and 316,868.80

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Solution

The fourth proportional to 330,865.60, 496,298.40 and 316,868.80 is: 475,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,865.60 : 496,298.40 = 316,868.80 : x
  2. Step 2: Convert to fraction form
    330,865.60/496,298.40 = 316,868.80/x
  3. Step 3: Cross multiply
    330,865.60x = 496,298.40 × 316,868.80
  4. Step 4: Simplify right side
    330,865.60x = 157,261,478,449.92
  5. Step 5: Solve for x
    x = 157,261,478,449.92/330,865.60
  6. Step 6: Final answer
    x = 475,303.20

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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.