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Finding the Fourth Proportional to 358,984.80, 538,768.80 and 347,320.80

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Solution

The fourth proportional to 358,984.80, 538,768.80 and 347,320.80 is: 521,263.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,984.80 : 538,768.80 = 347,320.80 : x
  2. Step 2: Convert to fraction form
    358,984.80/538,768.80 = 347,320.80/x
  3. Step 3: Cross multiply
    358,984.80x = 538,768.80 × 347,320.80
  4. Step 4: Simplify right side
    358,984.80x = 187,125,610,631.04
  5. Step 5: Solve for x
    x = 187,125,610,631.04/358,984.80
  6. Step 6: Final answer
    x = 521,263.33

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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.