Home / 458,187.14-687,004.59-205,421.87

Finding the Fourth Proportional to 458,187.14, 687,004.59 and 205,421.87

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Solution

The fourth proportional to 458,187.14, 687,004.59 and 205,421.87 is: 308,009.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,187.14 : 687,004.59 = 205,421.87 : x
  2. Step 2: Convert to fraction form
    458,187.14/687,004.59 = 205,421.87/x
  3. Step 3: Cross multiply
    458,187.14x = 687,004.59 × 205,421.87
  4. Step 4: Simplify right side
    458,187.14x = 141,125,767,576.38
  5. Step 5: Solve for x
    x = 141,125,767,576.38/458,187.14
  6. Step 6: Final answer
    x = 308,009.01

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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.