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Finding the Fourth Proportional to 347,799.60, 521,699.40 and 310,401.90

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Solution

The fourth proportional to 347,799.60, 521,699.40 and 310,401.90 is: 465,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,799.60 : 521,699.40 = 310,401.90 : x
  2. Step 2: Convert to fraction form
    347,799.60/521,699.40 = 310,401.90/x
  3. Step 3: Cross multiply
    347,799.60x = 521,699.40 × 310,401.90
  4. Step 4: Simplify right side
    347,799.60x = 161,936,484,988.86
  5. Step 5: Solve for x
    x = 161,936,484,988.86/347,799.60
  6. Step 6: Final answer
    x = 465,602.85

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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.