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Finding the Fourth Proportional to 315,266.84, 435,059.70 and 172,026.92

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Solution

The fourth proportional to 315,266.84, 435,059.70 and 172,026.92 is: 237,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,266.84 : 435,059.70 = 172,026.92 : x
  2. Step 2: Convert to fraction form
    315,266.84/435,059.70 = 172,026.92/x
  3. Step 3: Cross multiply
    315,266.84x = 435,059.70 × 172,026.92
  4. Step 4: Simplify right side
    315,266.84x = 74,841,980,207.12
  5. Step 5: Solve for x
    x = 74,841,980,207.12/315,266.84
  6. Step 6: Final answer
    x = 237,392.49

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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.