Home / 459,963.09-689,711.36-210,431.25

Finding the Fourth Proportional to 459,963.09, 689,711.36 and 210,431.25

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Solution

The fourth proportional to 459,963.09, 689,711.36 and 210,431.25 is: 315,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,963.09 : 689,711.36 = 210,431.25 : x
  2. Step 2: Convert to fraction form
    459,963.09/689,711.36 = 210,431.25/x
  3. Step 3: Cross multiply
    459,963.09x = 689,711.36 × 210,431.25
  4. Step 4: Simplify right side
    459,963.09x = 145,136,822,571.84
  5. Step 5: Solve for x
    x = 145,136,822,571.84/459,963.09
  6. Step 6: Final answer
    x = 315,540.15

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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.