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Finding the Fourth Proportional to 309,646.80, 464,470.20 and 262,407.60

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Solution

The fourth proportional to 309,646.80, 464,470.20 and 262,407.60 is: 393,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,646.80 : 464,470.20 = 262,407.60 : x
  2. Step 2: Convert to fraction form
    309,646.80/464,470.20 = 262,407.60/x
  3. Step 3: Cross multiply
    309,646.80x = 464,470.20 × 262,407.60
  4. Step 4: Simplify right side
    309,646.80x = 121,880,510,453.52
  5. Step 5: Solve for x
    x = 121,880,510,453.52/309,646.80
  6. Step 6: Final answer
    x = 393,611.40

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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.