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Finding the Fourth Proportional to 412,203.12, 618,460.40 and 159,498.81

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Solution

The fourth proportional to 412,203.12, 618,460.40 and 159,498.81 is: 239,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,203.12 : 618,460.40 = 159,498.81 : x
  2. Step 2: Convert to fraction form
    412,203.12/618,460.40 = 159,498.81/x
  3. Step 3: Cross multiply
    412,203.12x = 618,460.40 × 159,498.81
  4. Step 4: Simplify right side
    412,203.12x = 98,643,697,832.12
  5. Step 5: Solve for x
    x = 98,643,697,832.12/412,203.12
  6. Step 6: Final answer
    x = 239,308.47

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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.