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Finding the Fourth Proportional to 543,718.72, 816,076.20 and 291,284.20

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Solution

The fourth proportional to 543,718.72, 816,076.20 and 291,284.20 is: 437,193.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,718.72 : 816,076.20 = 291,284.20 : x
  2. Step 2: Convert to fraction form
    543,718.72/816,076.20 = 291,284.20/x
  3. Step 3: Cross multiply
    543,718.72x = 816,076.20 × 291,284.20
  4. Step 4: Simplify right side
    543,718.72x = 237,710,103,056.04
  5. Step 5: Solve for x
    x = 237,710,103,056.04/543,718.72
  6. Step 6: Final answer
    x = 437,193.16

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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.