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Finding the Fourth Proportional to 547,154.42, 755,076.21 and 320,803.70

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Solution

The fourth proportional to 547,154.42, 755,076.21 and 320,803.70 is: 442,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,154.42 : 755,076.21 = 320,803.70 : x
  2. Step 2: Convert to fraction form
    547,154.42/755,076.21 = 320,803.70/x
  3. Step 3: Cross multiply
    547,154.42x = 755,076.21 × 320,803.70
  4. Step 4: Simplify right side
    547,154.42x = 242,231,241,949.98
  5. Step 5: Solve for x
    x = 242,231,241,949.98/547,154.42
  6. Step 6: Final answer
    x = 442,710.93

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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.