Home / 402,814.04-555,872.28-221,525.91

Finding the Fourth Proportional to 402,814.04, 555,872.28 and 221,525.91

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Solution

The fourth proportional to 402,814.04, 555,872.28 and 221,525.91 is: 305,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,814.04 : 555,872.28 = 221,525.91 : x
  2. Step 2: Convert to fraction form
    402,814.04/555,872.28 = 221,525.91/x
  3. Step 3: Cross multiply
    402,814.04x = 555,872.28 × 221,525.91
  4. Step 4: Simplify right side
    402,814.04x = 123,140,112,670.78
  5. Step 5: Solve for x
    x = 123,140,112,670.78/402,814.04
  6. Step 6: Final answer
    x = 305,699.66

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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.