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Finding the Fourth Proportional to 666,348.55, 999,522.05 and 217,068.71

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Solution

The fourth proportional to 666,348.55, 999,522.05 and 217,068.71 is: 325,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,348.55 : 999,522.05 = 217,068.71 : x
  2. Step 2: Convert to fraction form
    666,348.55/999,522.05 = 217,068.71/x
  3. Step 3: Cross multiply
    666,348.55x = 999,522.05 × 217,068.71
  4. Step 4: Simplify right side
    666,348.55x = 216,964,957,555.12
  5. Step 5: Solve for x
    x = 216,964,957,555.12/666,348.55
  6. Step 6: Final answer
    x = 325,602.81

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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.