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Finding the Fourth Proportional to 620,496.40, 930,744.60 and 221,587.60

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Solution

The fourth proportional to 620,496.40, 930,744.60 and 221,587.60 is: 332,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,496.40 : 930,744.60 = 221,587.60 : x
  2. Step 2: Convert to fraction form
    620,496.40/930,744.60 = 221,587.60/x
  3. Step 3: Cross multiply
    620,496.40x = 930,744.60 × 221,587.60
  4. Step 4: Simplify right side
    620,496.40x = 206,241,462,126.96
  5. Step 5: Solve for x
    x = 206,241,462,126.96/620,496.40
  6. Step 6: Final answer
    x = 332,381.40

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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.