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Finding the Fourth Proportional to 302,546.40, 453,128.40 and 178,130.40

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Solution

The fourth proportional to 302,546.40, 453,128.40 and 178,130.40 is: 266,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,546.40 : 453,128.40 = 178,130.40 : x
  2. Step 2: Convert to fraction form
    302,546.40/453,128.40 = 178,130.40/x
  3. Step 3: Cross multiply
    302,546.40x = 453,128.40 × 178,130.40
  4. Step 4: Simplify right side
    302,546.40x = 80,715,943,143.36
  5. Step 5: Solve for x
    x = 80,715,943,143.36/302,546.40
  6. Step 6: Final answer
    x = 266,788.64

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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.