Home / 212,944.80-319,417.20-119,438.40

Finding the Fourth Proportional to 212,944.80, 319,417.20 and 119,438.40

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Solution

The fourth proportional to 212,944.80, 319,417.20 and 119,438.40 is: 179,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,944.80 : 319,417.20 = 119,438.40 : x
  2. Step 2: Convert to fraction form
    212,944.80/319,417.20 = 119,438.40/x
  3. Step 3: Cross multiply
    212,944.80x = 319,417.20 × 119,438.40
  4. Step 4: Simplify right side
    212,944.80x = 38,150,679,300.48
  5. Step 5: Solve for x
    x = 38,150,679,300.48/212,944.80
  6. Step 6: Final answer
    x = 179,157.60

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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.