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Finding the Fourth Proportional to 376,911.40, 565,172.70 and 140,132.20

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Solution

The fourth proportional to 376,911.40, 565,172.70 and 140,132.20 is: 210,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,911.40 : 565,172.70 = 140,132.20 : x
  2. Step 2: Convert to fraction form
    376,911.40/565,172.70 = 140,132.20/x
  3. Step 3: Cross multiply
    376,911.40x = 565,172.70 × 140,132.20
  4. Step 4: Simplify right side
    376,911.40x = 79,198,893,830.94
  5. Step 5: Solve for x
    x = 79,198,893,830.94/376,911.40
  6. Step 6: Final answer
    x = 210,126.02

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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.