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Finding the Fourth Proportional to 338,975.60, 508,463.40 and 313,314.80

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Solution

The fourth proportional to 338,975.60, 508,463.40 and 313,314.80 is: 469,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,975.60 : 508,463.40 = 313,314.80 : x
  2. Step 2: Convert to fraction form
    338,975.60/508,463.40 = 313,314.80/x
  3. Step 3: Cross multiply
    338,975.60x = 508,463.40 × 313,314.80
  4. Step 4: Simplify right side
    338,975.60x = 159,309,108,478.32
  5. Step 5: Solve for x
    x = 159,309,108,478.32/338,975.60
  6. Step 6: Final answer
    x = 469,972.20

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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.