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Finding the Fourth Proportional to 358,862.40, 538,034.40 and 201,139.20

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Solution

The fourth proportional to 358,862.40, 538,034.40 and 201,139.20 is: 301,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,862.40 : 538,034.40 = 201,139.20 : x
  2. Step 2: Convert to fraction form
    358,862.40/538,034.40 = 201,139.20/x
  3. Step 3: Cross multiply
    358,862.40x = 538,034.40 × 201,139.20
  4. Step 4: Simplify right side
    358,862.40x = 108,219,808,788.48
  5. Step 5: Solve for x
    x = 108,219,808,788.48/358,862.40
  6. Step 6: Final answer
    x = 301,563.52

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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.