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Finding the Fourth Proportional to 365,631.80, 548,447.70 and 318,975.80

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Solution

The fourth proportional to 365,631.80, 548,447.70 and 318,975.80 is: 478,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,631.80 : 548,447.70 = 318,975.80 : x
  2. Step 2: Convert to fraction form
    365,631.80/548,447.70 = 318,975.80/x
  3. Step 3: Cross multiply
    365,631.80x = 548,447.70 × 318,975.80
  4. Step 4: Simplify right side
    365,631.80x = 174,941,543,865.66
  5. Step 5: Solve for x
    x = 174,941,543,865.66/365,631.80
  6. Step 6: Final answer
    x = 478,463.70

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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.