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Finding the Fourth Proportional to 472,135.80, 706,475.70 and 347,719.80

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Solution

The fourth proportional to 472,135.80, 706,475.70 and 347,719.80 is: 520,307.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,135.80 : 706,475.70 = 347,719.80 : x
  2. Step 2: Convert to fraction form
    472,135.80/706,475.70 = 347,719.80/x
  3. Step 3: Cross multiply
    472,135.80x = 706,475.70 × 347,719.80
  4. Step 4: Simplify right side
    472,135.80x = 245,655,589,108.86
  5. Step 5: Solve for x
    x = 245,655,589,108.86/472,135.80
  6. Step 6: Final answer
    x = 520,307.06

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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.