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Finding the Fourth Proportional to 412,111.20, 618,239.70 and 146,026.20

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Solution

The fourth proportional to 412,111.20, 618,239.70 and 146,026.20 is: 219,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,111.20 : 618,239.70 = 146,026.20 : x
  2. Step 2: Convert to fraction form
    412,111.20/618,239.70 = 146,026.20/x
  3. Step 3: Cross multiply
    412,111.20x = 618,239.70 × 146,026.20
  4. Step 4: Simplify right side
    412,111.20x = 90,279,194,080.14
  5. Step 5: Solve for x
    x = 90,279,194,080.14/412,111.20
  6. Step 6: Final answer
    x = 219,065.13

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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.