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Finding the Fourth Proportional to 347,003.80, 478,680.60 and 211,079.32

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Solution

The fourth proportional to 347,003.80, 478,680.60 and 211,079.32 is: 291,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,003.80 : 478,680.60 = 211,079.32 : x
  2. Step 2: Convert to fraction form
    347,003.80/478,680.60 = 211,079.32/x
  3. Step 3: Cross multiply
    347,003.80x = 478,680.60 × 211,079.32
  4. Step 4: Simplify right side
    347,003.80x = 101,039,575,545.19
  5. Step 5: Solve for x
    x = 101,039,575,545.19/347,003.80
  6. Step 6: Final answer
    x = 291,177.14

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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.