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Finding the Fourth Proportional to 642,522.72, 963,799.60 and 216,064.12

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Solution

The fourth proportional to 642,522.72, 963,799.60 and 216,064.12 is: 324,101.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,522.72 : 963,799.60 = 216,064.12 : x
  2. Step 2: Convert to fraction form
    642,522.72/963,799.60 = 216,064.12/x
  3. Step 3: Cross multiply
    642,522.72x = 963,799.60 × 216,064.12
  4. Step 4: Simplify right side
    642,522.72x = 208,242,512,430.35
  5. Step 5: Solve for x
    x = 208,242,512,430.35/642,522.72
  6. Step 6: Final answer
    x = 324,101.40

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Similar ratio
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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.