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Finding the Fourth Proportional to 347,840.20, 521,630.70 and 242,345.80

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Solution

The fourth proportional to 347,840.20, 521,630.70 and 242,345.80 is: 363,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,840.20 : 521,630.70 = 242,345.80 : x
  2. Step 2: Convert to fraction form
    347,840.20/521,630.70 = 242,345.80/x
  3. Step 3: Cross multiply
    347,840.20x = 521,630.70 × 242,345.80
  4. Step 4: Simplify right side
    347,840.20x = 126,415,009,296.06
  5. Step 5: Solve for x
    x = 126,415,009,296.06/347,840.20
  6. Step 6: Final answer
    x = 363,428.41

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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.