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Finding the Fourth Proportional to 346,778.58, 520,185.90 and 110,139.78

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Solution

The fourth proportional to 346,778.58, 520,185.90 and 110,139.78 is: 165,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,778.58 : 520,185.90 = 110,139.78 : x
  2. Step 2: Convert to fraction form
    346,778.58/520,185.90 = 110,139.78/x
  3. Step 3: Cross multiply
    346,778.58x = 520,185.90 × 110,139.78
  4. Step 4: Simplify right side
    346,778.58x = 57,293,160,585.10
  5. Step 5: Solve for x
    x = 57,293,160,585.10/346,778.58
  6. Step 6: Final answer
    x = 165,215.40

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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.