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Finding the Fourth Proportional to 347,864.70, 521,019.45 and 340,088.70

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Solution

The fourth proportional to 347,864.70, 521,019.45 and 340,088.70 is: 509,372.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,864.70 : 521,019.45 = 340,088.70 : x
  2. Step 2: Convert to fraction form
    347,864.70/521,019.45 = 340,088.70/x
  3. Step 3: Cross multiply
    347,864.70x = 521,019.45 × 340,088.70
  4. Step 4: Simplify right side
    347,864.70x = 177,192,827,425.22
  5. Step 5: Solve for x
    x = 177,192,827,425.22/347,864.70
  6. Step 6: Final answer
    x = 509,372.83

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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.