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Finding the Fourth Proportional to 302,892.60, 454,338.90 and 103,438.20

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Solution

The fourth proportional to 302,892.60, 454,338.90 and 103,438.20 is: 155,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,892.60 : 454,338.90 = 103,438.20 : x
  2. Step 2: Convert to fraction form
    302,892.60/454,338.90 = 103,438.20/x
  3. Step 3: Cross multiply
    302,892.60x = 454,338.90 × 103,438.20
  4. Step 4: Simplify right side
    302,892.60x = 46,995,998,005.98
  5. Step 5: Solve for x
    x = 46,995,998,005.98/302,892.60
  6. Step 6: Final answer
    x = 155,157.30

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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.