Home / 458,459.22-687,725.29-142,918.86

Finding the Fourth Proportional to 458,459.22, 687,725.29 and 142,918.86

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Solution

The fourth proportional to 458,459.22, 687,725.29 and 142,918.86 is: 214,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,459.22 : 687,725.29 = 142,918.86 : x
  2. Step 2: Convert to fraction form
    458,459.22/687,725.29 = 142,918.86/x
  3. Step 3: Cross multiply
    458,459.22x = 687,725.29 × 142,918.86
  4. Step 4: Simplify right side
    458,459.22x = 98,288,916,393.67
  5. Step 5: Solve for x
    x = 98,288,916,393.67/458,459.22
  6. Step 6: Final answer
    x = 214,389.66

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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.