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Finding the Fourth Proportional to 253,503.25, 380,628.69 and 141,402.49

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Solution

The fourth proportional to 253,503.25, 380,628.69 and 141,402.49 is: 212,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,503.25 : 380,628.69 = 141,402.49 : x
  2. Step 2: Convert to fraction form
    253,503.25/380,628.69 = 141,402.49/x
  3. Step 3: Cross multiply
    253,503.25x = 380,628.69 × 141,402.49
  4. Step 4: Simplify right side
    253,503.25x = 53,821,844,531.44
  5. Step 5: Solve for x
    x = 53,821,844,531.44/253,503.25
  6. Step 6: Final answer
    x = 212,312.25

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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.