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Finding the Fourth Proportional to 145,878.20, 218,814.10 and 40,694.20

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Solution

The fourth proportional to 145,878.20, 218,814.10 and 40,694.20 is: 61,040.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.20 : 218,814.10 = 40,694.20 : x
  2. Step 2: Convert to fraction form
    145,878.20/218,814.10 = 40,694.20/x
  3. Step 3: Cross multiply
    145,878.20x = 218,814.10 × 40,694.20
  4. Step 4: Simplify right side
    145,878.20x = 8,904,464,748.22
  5. Step 5: Solve for x
    x = 8,904,464,748.22/145,878.20
  6. Step 6: Final answer
    x = 61,040.41

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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.