Home / 515,103.21-710,844.35-285,681.70

Finding the Fourth Proportional to 515,103.21, 710,844.35 and 285,681.70

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Solution

The fourth proportional to 515,103.21, 710,844.35 and 285,681.70 is: 394,241.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,103.21 : 710,844.35 = 285,681.70 : x
  2. Step 2: Convert to fraction form
    515,103.21/710,844.35 = 285,681.70/x
  3. Step 3: Cross multiply
    515,103.21x = 710,844.35 × 285,681.70
  4. Step 4: Simplify right side
    515,103.21x = 203,075,224,940.36
  5. Step 5: Solve for x
    x = 203,075,224,940.36/515,103.21
  6. Step 6: Final answer
    x = 394,241.81

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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.