Home / 528,007.80-790,845.30-212,302.20

Finding the Fourth Proportional to 528,007.80, 790,845.30 and 212,302.20

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Solution

The fourth proportional to 528,007.80, 790,845.30 and 212,302.20 is: 317,984.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,007.80 : 790,845.30 = 212,302.20 : x
  2. Step 2: Convert to fraction form
    528,007.80/790,845.30 = 212,302.20/x
  3. Step 3: Cross multiply
    528,007.80x = 790,845.30 × 212,302.20
  4. Step 4: Simplify right side
    528,007.80x = 167,898,197,049.66
  5. Step 5: Solve for x
    x = 167,898,197,049.66/528,007.80
  6. Step 6: Final answer
    x = 317,984.31

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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.