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Finding the Fourth Proportional to 315,302.22, 435,114.72 and 172,059.12

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Solution

The fourth proportional to 315,302.22, 435,114.72 and 172,059.12 is: 237,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,302.22 : 435,114.72 = 172,059.12 : x
  2. Step 2: Convert to fraction form
    315,302.22/435,114.72 = 172,059.12/x
  3. Step 3: Cross multiply
    315,302.22x = 435,114.72 × 172,059.12
  4. Step 4: Simplify right side
    315,302.22x = 74,865,455,822.25
  5. Step 5: Solve for x
    x = 74,865,455,822.25/315,302.22
  6. Step 6: Final answer
    x = 237,440.31

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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.