Home / 402,996.31-556,214.40-231,029.75

Finding the Fourth Proportional to 402,996.31, 556,214.40 and 231,029.75

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Solution

The fourth proportional to 402,996.31, 556,214.40 and 231,029.75 is: 318,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,996.31 : 556,214.40 = 231,029.75 : x
  2. Step 2: Convert to fraction form
    402,996.31/556,214.40 = 231,029.75/x
  3. Step 3: Cross multiply
    402,996.31x = 556,214.40 × 231,029.75
  4. Step 4: Simplify right side
    402,996.31x = 128,502,075,168.94
  5. Step 5: Solve for x
    x = 128,502,075,168.94/402,996.31
  6. Step 6: Final answer
    x = 318,866.63

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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.