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Finding the Fourth Proportional to 401,495.68, 554,064.42 and 220,215.34

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Solution

The fourth proportional to 401,495.68, 554,064.42 and 220,215.34 is: 303,897.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,495.68 : 554,064.42 = 220,215.34 : x
  2. Step 2: Convert to fraction form
    401,495.68/554,064.42 = 220,215.34/x
  3. Step 3: Cross multiply
    401,495.68x = 554,064.42 × 220,215.34
  4. Step 4: Simplify right side
    401,495.68x = 122,013,484,632.20
  5. Step 5: Solve for x
    x = 122,013,484,632.20/401,495.68
  6. Step 6: Final answer
    x = 303,897.38

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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.