Home / 352,428.09-528,637.55-86,190.91

Finding the Fourth Proportional to 352,428.09, 528,637.55 and 86,190.91

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Solution

The fourth proportional to 352,428.09, 528,637.55 and 86,190.91 is: 129,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,428.09 : 528,637.55 = 86,190.91 : x
  2. Step 2: Convert to fraction form
    352,428.09/528,637.55 = 86,190.91/x
  3. Step 3: Cross multiply
    352,428.09x = 528,637.55 × 86,190.91
  4. Step 4: Simplify right side
    352,428.09x = 45,563,751,494.67
  5. Step 5: Solve for x
    x = 45,563,751,494.67/352,428.09
  6. Step 6: Final answer
    x = 129,285.24

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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.