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Finding the Fourth Proportional to 356,610.69, 492,173.21 and 220,688.42

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Solution

The fourth proportional to 356,610.69, 492,173.21 and 220,688.42 is: 304,581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,610.69 : 492,173.21 = 220,688.42 : x
  2. Step 2: Convert to fraction form
    356,610.69/492,173.21 = 220,688.42/x
  3. Step 3: Cross multiply
    356,610.69x = 492,173.21 × 220,688.42
  4. Step 4: Simplify right side
    356,610.69x = 108,616,926,172.08
  5. Step 5: Solve for x
    x = 108,616,926,172.08/356,610.69
  6. Step 6: Final answer
    x = 304,581.24

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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.