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Finding the Fourth Proportional to 347,434.50, 479,459.61 and 188,458.50

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Solution

The fourth proportional to 347,434.50, 479,459.61 and 188,458.50 is: 260,072.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,434.50 : 479,459.61 = 188,458.50 : x
  2. Step 2: Convert to fraction form
    347,434.50/479,459.61 = 188,458.50/x
  3. Step 3: Cross multiply
    347,434.50x = 479,459.61 × 188,458.50
  4. Step 4: Simplify right side
    347,434.50x = 90,358,238,911.19
  5. Step 5: Solve for x
    x = 90,358,238,911.19/347,434.50
  6. Step 6: Final answer
    x = 260,072.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.