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Finding the Fourth Proportional to 547,787.80, 821,681.70 and 153,803.80

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Solution

The fourth proportional to 547,787.80, 821,681.70 and 153,803.80 is: 230,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,787.80 : 821,681.70 = 153,803.80 : x
  2. Step 2: Convert to fraction form
    547,787.80/821,681.70 = 153,803.80/x
  3. Step 3: Cross multiply
    547,787.80x = 821,681.70 × 153,803.80
  4. Step 4: Simplify right side
    547,787.80x = 126,377,767,850.46
  5. Step 5: Solve for x
    x = 126,377,767,850.46/547,787.80
  6. Step 6: Final answer
    x = 230,705.70

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Similar ratio
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1.5x scale

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.