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Finding the Fourth Proportional to 402,179.19, 555,013.80 and 220,907.67

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Solution

The fourth proportional to 402,179.19, 555,013.80 and 220,907.67 is: 304,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,179.19 : 555,013.80 = 220,907.67 : x
  2. Step 2: Convert to fraction form
    402,179.19/555,013.80 = 220,907.67/x
  3. Step 3: Cross multiply
    402,179.19x = 555,013.80 × 220,907.67
  4. Step 4: Simplify right side
    402,179.19x = 122,606,805,375.85
  5. Step 5: Solve for x
    x = 122,606,805,375.85/402,179.19
  6. Step 6: Final answer
    x = 304,856.16

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1.5x scale

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.