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Finding the Fourth Proportional to 315,447.54, 435,473.68 and 194,655.34

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Solution

The fourth proportional to 315,447.54, 435,473.68 and 194,655.34 is: 268,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,447.54 : 435,473.68 = 194,655.34 : x
  2. Step 2: Convert to fraction form
    315,447.54/435,473.68 = 194,655.34/x
  3. Step 3: Cross multiply
    315,447.54x = 435,473.68 × 194,655.34
  4. Step 4: Simplify right side
    315,447.54x = 84,767,277,241.45
  5. Step 5: Solve for x
    x = 84,767,277,241.45/315,447.54
  6. Step 6: Final answer
    x = 268,720.68

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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.