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Finding the Fourth Proportional to 315,461.44, 435,339.04 and 172,224.32

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Solution

The fourth proportional to 315,461.44, 435,339.04 and 172,224.32 is: 237,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,461.44 : 435,339.04 = 172,224.32 : x
  2. Step 2: Convert to fraction form
    315,461.44/435,339.04 = 172,224.32/x
  3. Step 3: Cross multiply
    315,461.44x = 435,339.04 × 172,224.32
  4. Step 4: Simplify right side
    315,461.44x = 74,975,970,133.45
  5. Step 5: Solve for x
    x = 74,975,970,133.45/315,461.44
  6. Step 6: Final answer
    x = 237,670.79

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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.