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Finding the Fourth Proportional to 347,999.40, 486,149.40 and 347,999.40

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Solution

The fourth proportional to 347,999.40, 486,149.40 and 347,999.40 is: 486,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,999.40 : 486,149.40 = 347,999.40 : x
  2. Step 2: Convert to fraction form
    347,999.40/486,149.40 = 347,999.40/x
  3. Step 3: Cross multiply
    347,999.40x = 486,149.40 × 347,999.40
  4. Step 4: Simplify right side
    347,999.40x = 169,179,699,510.36
  5. Step 5: Solve for x
    x = 169,179,699,510.36/347,999.40
  6. Step 6: Final answer
    x = 486,149.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.