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Finding the Fourth Proportional to 347,334.75, 521,002.13 and 84,678.75

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Solution

The fourth proportional to 347,334.75, 521,002.13 and 84,678.75 is: 127,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,334.75 : 521,002.13 = 84,678.75 : x
  2. Step 2: Convert to fraction form
    347,334.75/521,002.13 = 84,678.75/x
  3. Step 3: Cross multiply
    347,334.75x = 521,002.13 × 84,678.75
  4. Step 4: Simplify right side
    347,334.75x = 44,117,808,692.34
  5. Step 5: Solve for x
    x = 44,117,808,692.34/347,334.75
  6. Step 6: Final answer
    x = 127,018.13

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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.