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Finding the Fourth Proportional to 666,532.16, 999,901.91 and 217,148.41

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Solution

The fourth proportional to 666,532.16, 999,901.91 and 217,148.41 is: 325,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,532.16 : 999,901.91 = 217,148.41 : x
  2. Step 2: Convert to fraction form
    666,532.16/999,901.91 = 217,148.41/x
  3. Step 3: Cross multiply
    666,532.16x = 999,901.91 × 217,148.41
  4. Step 4: Simplify right side
    666,532.16x = 217,127,107,955.58
  5. Step 5: Solve for x
    x = 217,127,107,955.58/666,532.16
  6. Step 6: Final answer
    x = 325,756.39

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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.