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Finding the Fourth Proportional to 315,583.95, 435,509.32 and 172,348.21

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Solution

The fourth proportional to 315,583.95, 435,509.32 and 172,348.21 is: 237,842.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,583.95 : 435,509.32 = 172,348.21 : x
  2. Step 2: Convert to fraction form
    315,583.95/435,509.32 = 172,348.21/x
  3. Step 3: Cross multiply
    315,583.95x = 435,509.32 × 172,348.21
  4. Step 4: Simplify right side
    315,583.95x = 75,059,250,220.67
  5. Step 5: Solve for x
    x = 75,059,250,220.67/315,583.95
  6. Step 6: Final answer
    x = 237,842.42

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1.5x scale

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.