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Finding the Fourth Proportional to 666,638.48, 999,964.20 and 168,002.48

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Solution

The fourth proportional to 666,638.48, 999,964.20 and 168,002.48 is: 252,005.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,638.48 : 999,964.20 = 168,002.48 : x
  2. Step 2: Convert to fraction form
    666,638.48/999,964.20 = 168,002.48/x
  3. Step 3: Cross multiply
    666,638.48x = 999,964.20 × 168,002.48
  4. Step 4: Simplify right side
    666,638.48x = 167,996,465,511.22
  5. Step 5: Solve for x
    x = 167,996,465,511.22/666,638.48
  6. Step 6: Final answer
    x = 252,005.35

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1.5x scale

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.