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Finding the Fourth Proportional to 212,032.60, 318,048.90 and 202,931.80

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Solution

The fourth proportional to 212,032.60, 318,048.90 and 202,931.80 is: 304,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,032.60 : 318,048.90 = 202,931.80 : x
  2. Step 2: Convert to fraction form
    212,032.60/318,048.90 = 202,931.80/x
  3. Step 3: Cross multiply
    212,032.60x = 318,048.90 × 202,931.80
  4. Step 4: Simplify right side
    212,032.60x = 64,542,235,765.02
  5. Step 5: Solve for x
    x = 64,542,235,765.02/212,032.60
  6. Step 6: Final answer
    x = 304,397.70

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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.