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Finding the Fourth Proportional to 292,364.60, 438,546.90 and 221,505.80

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Solution

The fourth proportional to 292,364.60, 438,546.90 and 221,505.80 is: 332,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,364.60 : 438,546.90 = 221,505.80 : x
  2. Step 2: Convert to fraction form
    292,364.60/438,546.90 = 221,505.80/x
  3. Step 3: Cross multiply
    292,364.60x = 438,546.90 × 221,505.80
  4. Step 4: Simplify right side
    292,364.60x = 97,140,681,922.02
  5. Step 5: Solve for x
    x = 97,140,681,922.02/292,364.60
  6. Step 6: Final answer
    x = 332,258.70

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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.