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Finding the Fourth Proportional to 346,415.80, 519,234.90 and 146,702.20

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Solution

The fourth proportional to 346,415.80, 519,234.90 and 146,702.20 is: 219,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,415.80 : 519,234.90 = 146,702.20 : x
  2. Step 2: Convert to fraction form
    346,415.80/519,234.90 = 146,702.20/x
  3. Step 3: Cross multiply
    346,415.80x = 519,234.90 × 146,702.20
  4. Step 4: Simplify right side
    346,415.80x = 76,172,902,146.78
  5. Step 5: Solve for x
    x = 76,172,902,146.78/346,415.80
  6. Step 6: Final answer
    x = 219,888.65

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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.