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Finding the Fourth Proportional to 661,630.74, 992,457.45 and 188,328.30

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Solution

The fourth proportional to 661,630.74, 992,457.45 and 188,328.30 is: 282,495.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,630.74 : 992,457.45 = 188,328.30 : x
  2. Step 2: Convert to fraction form
    661,630.74/992,457.45 = 188,328.30/x
  3. Step 3: Cross multiply
    661,630.74x = 992,457.45 × 188,328.30
  4. Step 4: Simplify right side
    661,630.74x = 186,907,824,380.84
  5. Step 5: Solve for x
    x = 186,907,824,380.84/661,630.74
  6. Step 6: Final answer
    x = 282,495.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.