Home / 402,514.29-555,475.47-221,242.98

Finding the Fourth Proportional to 402,514.29, 555,475.47 and 221,242.98

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Solution

The fourth proportional to 402,514.29, 555,475.47 and 221,242.98 is: 305,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,514.29 : 555,475.47 = 221,242.98 : x
  2. Step 2: Convert to fraction form
    402,514.29/555,475.47 = 221,242.98/x
  3. Step 3: Cross multiply
    402,514.29x = 555,475.47 × 221,242.98
  4. Step 4: Simplify right side
    402,514.29x = 122,895,048,299.70
  5. Step 5: Solve for x
    x = 122,895,048,299.70/402,514.29
  6. Step 6: Final answer
    x = 305,318.47

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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.