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Finding the Fourth Proportional to 346,920.08, 520,415.82 and 130,960.71

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Solution

The fourth proportional to 346,920.08, 520,415.82 and 130,960.71 is: 196,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,920.08 : 520,415.82 = 130,960.71 : x
  2. Step 2: Convert to fraction form
    346,920.08/520,415.82 = 130,960.71/x
  3. Step 3: Cross multiply
    346,920.08x = 520,415.82 × 130,960.71
  4. Step 4: Simplify right side
    346,920.08x = 68,154,025,282.43
  5. Step 5: Solve for x
    x = 68,154,025,282.43/346,920.08
  6. Step 6: Final answer
    x = 196,454.54

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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.