Home / 459,739.05-689,601.64-206,840.95

Finding the Fourth Proportional to 459,739.05, 689,601.64 and 206,840.95

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Solution

The fourth proportional to 459,739.05, 689,601.64 and 206,840.95 is: 310,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,739.05 : 689,601.64 = 206,840.95 : x
  2. Step 2: Convert to fraction form
    459,739.05/689,601.64 = 206,840.95/x
  3. Step 3: Cross multiply
    459,739.05x = 689,601.64 × 206,840.95
  4. Step 4: Simplify right side
    459,739.05x = 142,637,854,374.05
  5. Step 5: Solve for x
    x = 142,637,854,374.05/459,739.05
  6. Step 6: Final answer
    x = 310,258.30

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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.