Home / 315,364.79-435,199.03-172,122.37

Finding the Fourth Proportional to 315,364.79, 435,199.03 and 172,122.37

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Solution

The fourth proportional to 315,364.79, 435,199.03 and 172,122.37 is: 237,526.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,364.79 : 435,199.03 = 172,122.37 : x
  2. Step 2: Convert to fraction form
    315,364.79/435,199.03 = 172,122.37/x
  3. Step 3: Cross multiply
    315,364.79x = 435,199.03 × 172,122.37
  4. Step 4: Simplify right side
    315,364.79x = 74,907,486,947.00
  5. Step 5: Solve for x
    x = 74,907,486,947.00/315,364.79
  6. Step 6: Final answer
    x = 237,526.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.