Home / 328,551.07-492,826.61-128,965.45

Finding the Fourth Proportional to 328,551.07, 492,826.61 and 128,965.45

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Solution

The fourth proportional to 328,551.07, 492,826.61 and 128,965.45 is: 193,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,551.07 : 492,826.61 = 128,965.45 : x
  2. Step 2: Convert to fraction form
    328,551.07/492,826.61 = 128,965.45/x
  3. Step 3: Cross multiply
    328,551.07x = 492,826.61 × 128,965.45
  4. Step 4: Simplify right side
    328,551.07x = 63,557,605,530.62
  5. Step 5: Solve for x
    x = 63,557,605,530.62/328,551.07
  6. Step 6: Final answer
    x = 193,448.18

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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.