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Finding the Fourth Proportional to 302,428.40, 453,205.20 and 133,810.70

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Solution

The fourth proportional to 302,428.40, 453,205.20 and 133,810.70 is: 200,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,428.40 : 453,205.20 = 133,810.70 : x
  2. Step 2: Convert to fraction form
    302,428.40/453,205.20 = 133,810.70/x
  3. Step 3: Cross multiply
    302,428.40x = 453,205.20 × 133,810.70
  4. Step 4: Simplify right side
    302,428.40x = 60,643,705,055.64
  5. Step 5: Solve for x
    x = 60,643,705,055.64/302,428.40
  6. Step 6: Final answer
    x = 200,522.52

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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.