Home / 212,625.60-318,938.40-133,828.80

Finding the Fourth Proportional to 212,625.60, 318,938.40 and 133,828.80

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Solution

The fourth proportional to 212,625.60, 318,938.40 and 133,828.80 is: 200,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,625.60 : 318,938.40 = 133,828.80 : x
  2. Step 2: Convert to fraction form
    212,625.60/318,938.40 = 133,828.80/x
  3. Step 3: Cross multiply
    212,625.60x = 318,938.40 × 133,828.80
  4. Step 4: Simplify right side
    212,625.60x = 42,683,143,345.92
  5. Step 5: Solve for x
    x = 42,683,143,345.92/212,625.60
  6. Step 6: Final answer
    x = 200,743.20

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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.