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Finding the Fourth Proportional to 511,240.15, 705,482.89 and 281,752.57

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Solution

The fourth proportional to 511,240.15, 705,482.89 and 281,752.57 is: 388,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,240.15 : 705,482.89 = 281,752.57 : x
  2. Step 2: Convert to fraction form
    511,240.15/705,482.89 = 281,752.57/x
  3. Step 3: Cross multiply
    511,240.15x = 705,482.89 × 281,752.57
  4. Step 4: Simplify right side
    511,240.15x = 198,771,617,348.53
  5. Step 5: Solve for x
    x = 198,771,617,348.53/511,240.15
  6. Step 6: Final answer
    x = 388,802.83

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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.