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Finding the Fourth Proportional to 348,045.80, 522,068.70 and 343,380.20

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Solution

The fourth proportional to 348,045.80, 522,068.70 and 343,380.20 is: 515,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,045.80 : 522,068.70 = 343,380.20 : x
  2. Step 2: Convert to fraction form
    348,045.80/522,068.70 = 343,380.20/x
  3. Step 3: Cross multiply
    348,045.80x = 522,068.70 × 343,380.20
  4. Step 4: Simplify right side
    348,045.80x = 179,268,054,619.74
  5. Step 5: Solve for x
    x = 179,268,054,619.74/348,045.80
  6. Step 6: Final answer
    x = 515,070.30

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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.