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Finding the Fourth Proportional to 315,295.67, 435,117.22 and 172,064.94

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Solution

The fourth proportional to 315,295.67, 435,117.22 and 172,064.94 is: 237,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,295.67 : 435,117.22 = 172,064.94 : x
  2. Step 2: Convert to fraction form
    315,295.67/435,117.22 = 172,064.94/x
  3. Step 3: Cross multiply
    315,295.67x = 435,117.22 × 172,064.94
  4. Step 4: Simplify right side
    315,295.67x = 74,868,418,352.27
  5. Step 5: Solve for x
    x = 74,868,418,352.27/315,295.67
  6. Step 6: Final answer
    x = 237,454.64

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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.