Home / 459,870.88-689,574.38-139,961.38

Finding the Fourth Proportional to 459,870.88, 689,574.38 and 139,961.38

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Solution

The fourth proportional to 459,870.88, 689,574.38 and 139,961.38 is: 209,871.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,870.88 : 689,574.38 = 139,961.38 : x
  2. Step 2: Convert to fraction form
    459,870.88/689,574.38 = 139,961.38/x
  3. Step 3: Cross multiply
    459,870.88x = 689,574.38 × 139,961.38
  4. Step 4: Simplify right side
    459,870.88x = 96,513,781,837.44
  5. Step 5: Solve for x
    x = 96,513,781,837.44/459,870.88
  6. Step 6: Final answer
    x = 209,871.48

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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.