Home / 402,835.90-555,927.48-221,561.52

Finding the Fourth Proportional to 402,835.90, 555,927.48 and 221,561.52

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Solution

The fourth proportional to 402,835.90, 555,927.48 and 221,561.52 is: 305,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,835.90 : 555,927.48 = 221,561.52 : x
  2. Step 2: Convert to fraction form
    402,835.90/555,927.48 = 221,561.52/x
  3. Step 3: Cross multiply
    402,835.90x = 555,927.48 × 221,561.52
  4. Step 4: Simplify right side
    402,835.90x = 123,172,137,478.57
  5. Step 5: Solve for x
    x = 123,172,137,478.57/402,835.90
  6. Step 6: Final answer
    x = 305,762.56

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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.