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Finding the Fourth Proportional to 358,749.20, 538,123.80 and 268,936.40

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Solution

The fourth proportional to 358,749.20, 538,123.80 and 268,936.40 is: 403,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,749.20 : 538,123.80 = 268,936.40 : x
  2. Step 2: Convert to fraction form
    358,749.20/538,123.80 = 268,936.40/x
  3. Step 3: Cross multiply
    358,749.20x = 538,123.80 × 268,936.40
  4. Step 4: Simplify right side
    358,749.20x = 144,721,077,526.32
  5. Step 5: Solve for x
    x = 144,721,077,526.32/358,749.20
  6. Step 6: Final answer
    x = 403,404.60

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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.