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Finding the Fourth Proportional to 315,608.16, 435,541.68 and 172,365.60

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Solution

The fourth proportional to 315,608.16, 435,541.68 and 172,365.60 is: 237,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,608.16 : 435,541.68 = 172,365.60 : x
  2. Step 2: Convert to fraction form
    315,608.16/435,541.68 = 172,365.60/x
  3. Step 3: Cross multiply
    315,608.16x = 435,541.68 × 172,365.60
  4. Step 4: Simplify right side
    315,608.16x = 75,072,402,998.21
  5. Step 5: Solve for x
    x = 75,072,402,998.21/315,608.16
  6. Step 6: Final answer
    x = 237,865.85

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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.