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Finding the Fourth Proportional to 149,990.40, 224,985.60 and 141,242.40

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Solution

The fourth proportional to 149,990.40, 224,985.60 and 141,242.40 is: 211,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,990.40 : 224,985.60 = 141,242.40 : x
  2. Step 2: Convert to fraction form
    149,990.40/224,985.60 = 141,242.40/x
  3. Step 3: Cross multiply
    149,990.40x = 224,985.60 × 141,242.40
  4. Step 4: Simplify right side
    149,990.40x = 31,777,506,109.44
  5. Step 5: Solve for x
    x = 31,777,506,109.44/149,990.40
  6. Step 6: Final answer
    x = 211,863.60

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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.