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Finding the Fourth Proportional to 358,836.30, 538,254.45 and 308,972.70

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Solution

The fourth proportional to 358,836.30, 538,254.45 and 308,972.70 is: 463,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,836.30 : 538,254.45 = 308,972.70 : x
  2. Step 2: Convert to fraction form
    358,836.30/538,254.45 = 308,972.70/x
  3. Step 3: Cross multiply
    358,836.30x = 538,254.45 × 308,972.70
  4. Step 4: Simplify right side
    358,836.30x = 166,305,930,703.52
  5. Step 5: Solve for x
    x = 166,305,930,703.52/358,836.30
  6. Step 6: Final answer
    x = 463,459.05

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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.