Home / 315,357.30-435,194.28-172,120.50

Finding the Fourth Proportional to 315,357.30, 435,194.28 and 172,120.50

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Solution

The fourth proportional to 315,357.30, 435,194.28 and 172,120.50 is: 237,526.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,357.30 : 435,194.28 = 172,120.50 : x
  2. Step 2: Convert to fraction form
    315,357.30/435,194.28 = 172,120.50/x
  3. Step 3: Cross multiply
    315,357.30x = 435,194.28 × 172,120.50
  4. Step 4: Simplify right side
    315,357.30x = 74,905,857,070.74
  5. Step 5: Solve for x
    x = 74,905,857,070.74/315,357.30
  6. Step 6: Final answer
    x = 237,526.95

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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.