Home / 385,955.35-531,429.46-342,860.11

Finding the Fourth Proportional to 385,955.35, 531,429.46 and 342,860.11

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Solution

The fourth proportional to 385,955.35, 531,429.46 and 342,860.11 is: 472,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,955.35 : 531,429.46 = 342,860.11 : x
  2. Step 2: Convert to fraction form
    385,955.35/531,429.46 = 342,860.11/x
  3. Step 3: Cross multiply
    385,955.35x = 531,429.46 × 342,860.11
  4. Step 4: Simplify right side
    385,955.35x = 182,205,960,927.12
  5. Step 5: Solve for x
    x = 182,205,960,927.12/385,955.35
  6. Step 6: Final answer
    x = 472,090.78

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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.