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Finding the Fourth Proportional to 544,987.76, 817,537.40 and 208,311.80

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Solution

The fourth proportional to 544,987.76, 817,537.40 and 208,311.80 is: 312,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,987.76 : 817,537.40 = 208,311.80 : x
  2. Step 2: Convert to fraction form
    544,987.76/817,537.40 = 208,311.80/x
  3. Step 3: Cross multiply
    544,987.76x = 817,537.40 × 208,311.80
  4. Step 4: Simplify right side
    544,987.76x = 170,302,687,361.32
  5. Step 5: Solve for x
    x = 170,302,687,361.32/544,987.76
  6. Step 6: Final answer
    x = 312,489.01

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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.