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Finding the Fourth Proportional to 315,573.76, 435,495.36 and 172,335.52

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Solution

The fourth proportional to 315,573.76, 435,495.36 and 172,335.52 is: 237,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,573.76 : 435,495.36 = 172,335.52 : x
  2. Step 2: Convert to fraction form
    315,573.76/435,495.36 = 172,335.52/x
  3. Step 3: Cross multiply
    315,573.76x = 435,495.36 × 172,335.52
  4. Step 4: Simplify right side
    315,573.76x = 75,051,319,323.19
  5. Step 5: Solve for x
    x = 75,051,319,323.19/315,573.76
  6. Step 6: Final answer
    x = 237,824.97

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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.