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Finding the Fourth Proportional to 376,807.70, 565,211.55 and 140,101.40

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Solution

The fourth proportional to 376,807.70, 565,211.55 and 140,101.40 is: 210,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,807.70 : 565,211.55 = 140,101.40 : x
  2. Step 2: Convert to fraction form
    376,807.70/565,211.55 = 140,101.40/x
  3. Step 3: Cross multiply
    376,807.70x = 565,211.55 × 140,101.40
  4. Step 4: Simplify right side
    376,807.70x = 79,186,929,451.17
  5. Step 5: Solve for x
    x = 79,186,929,451.17/376,807.70
  6. Step 6: Final answer
    x = 210,152.10

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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.