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Finding the Fourth Proportional to 347,712.60, 479,372.22 and 297,267.18

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Solution

The fourth proportional to 347,712.60, 479,372.22 and 297,267.18 is: 409,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,712.60 : 479,372.22 = 297,267.18 : x
  2. Step 2: Convert to fraction form
    347,712.60/479,372.22 = 297,267.18/x
  3. Step 3: Cross multiply
    347,712.60x = 479,372.22 × 297,267.18
  4. Step 4: Simplify right side
    347,712.60x = 142,501,628,009.74
  5. Step 5: Solve for x
    x = 142,501,628,009.74/347,712.60
  6. Step 6: Final answer
    x = 409,825.90

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1.5x scale

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.