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Finding the Fourth Proportional to 356,714.80, 534,618.60 and 146,114.80

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Solution

The fourth proportional to 356,714.80, 534,618.60 and 146,114.80 is: 218,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,714.80 : 534,618.60 = 146,114.80 : x
  2. Step 2: Convert to fraction form
    356,714.80/534,618.60 = 146,114.80/x
  3. Step 3: Cross multiply
    356,714.80x = 534,618.60 × 146,114.80
  4. Step 4: Simplify right side
    356,714.80x = 78,115,689,815.28
  5. Step 5: Solve for x
    x = 78,115,689,815.28/356,714.80
  6. Step 6: Final answer
    x = 218,986.40

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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.