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Finding the Fourth Proportional to 401,605.65, 554,213.54 and 220,312.94

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Solution

The fourth proportional to 401,605.65, 554,213.54 and 220,312.94 is: 304,030.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,605.65 : 554,213.54 = 220,312.94 : x
  2. Step 2: Convert to fraction form
    401,605.65/554,213.54 = 220,312.94/x
  3. Step 3: Cross multiply
    401,605.65x = 554,213.54 × 220,312.94
  4. Step 4: Simplify right side
    401,605.65x = 122,100,412,164.92
  5. Step 5: Solve for x
    x = 122,100,412,164.92/401,605.65
  6. Step 6: Final answer
    x = 304,030.61

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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.