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Finding the Fourth Proportional to 302,940.90, 454,374.90 and 125,429.40

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Solution

The fourth proportional to 302,940.90, 454,374.90 and 125,429.40 is: 188,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,940.90 : 454,374.90 = 125,429.40 : x
  2. Step 2: Convert to fraction form
    302,940.90/454,374.90 = 125,429.40/x
  3. Step 3: Cross multiply
    302,940.90x = 454,374.90 × 125,429.40
  4. Step 4: Simplify right side
    302,940.90x = 56,991,971,082.06
  5. Step 5: Solve for x
    x = 56,991,971,082.06/302,940.90
  6. Step 6: Final answer
    x = 188,129.01

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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.