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Finding the Fourth Proportional to 346,312.80, 519,420.60 and 109,679.40

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Solution

The fourth proportional to 346,312.80, 519,420.60 and 109,679.40 is: 164,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,312.80 : 519,420.60 = 109,679.40 : x
  2. Step 2: Convert to fraction form
    346,312.80/519,420.60 = 109,679.40/x
  3. Step 3: Cross multiply
    346,312.80x = 519,420.60 × 109,679.40
  4. Step 4: Simplify right side
    346,312.80x = 56,969,739,755.64
  5. Step 5: Solve for x
    x = 56,969,739,755.64/346,312.80
  6. Step 6: Final answer
    x = 164,503.71

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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.