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Finding the Fourth Proportional to 402,500.04, 555,463.38 and 221,218.38

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Solution

The fourth proportional to 402,500.04, 555,463.38 and 221,218.38 is: 305,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,500.04 : 555,463.38 = 221,218.38 : x
  2. Step 2: Convert to fraction form
    402,500.04/555,463.38 = 221,218.38/x
  3. Step 3: Cross multiply
    402,500.04x = 555,463.38 × 221,218.38
  4. Step 4: Simplify right side
    402,500.04x = 122,878,709,072.92
  5. Step 5: Solve for x
    x = 122,878,709,072.92/402,500.04
  6. Step 6: Final answer
    x = 305,288.69

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Double scale
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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.