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Finding the Fourth Proportional to 302,721.40, 454,082.10 and 125,574.40

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Solution

The fourth proportional to 302,721.40, 454,082.10 and 125,574.40 is: 188,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,721.40 : 454,082.10 = 125,574.40 : x
  2. Step 2: Convert to fraction form
    302,721.40/454,082.10 = 125,574.40/x
  3. Step 3: Cross multiply
    302,721.40x = 454,082.10 × 125,574.40
  4. Step 4: Simplify right side
    302,721.40x = 57,021,087,258.24
  5. Step 5: Solve for x
    x = 57,021,087,258.24/302,721.40
  6. Step 6: Final answer
    x = 188,361.60

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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.