Home / 402,561.37-555,536.10-221,289.04

Finding the Fourth Proportional to 402,561.37, 555,536.10 and 221,289.04

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Solution

The fourth proportional to 402,561.37, 555,536.10 and 221,289.04 is: 305,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,561.37 : 555,536.10 = 221,289.04 : x
  2. Step 2: Convert to fraction form
    402,561.37/555,536.10 = 221,289.04/x
  3. Step 3: Cross multiply
    402,561.37x = 555,536.10 × 221,289.04
  4. Step 4: Simplify right side
    402,561.37x = 122,934,050,254.34
  5. Step 5: Solve for x
    x = 122,934,050,254.34/402,561.37
  6. Step 6: Final answer
    x = 305,379.65

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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.