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Finding the Fourth Proportional to 342,008.94, 512,989.08 and 105,326.94

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Solution

The fourth proportional to 342,008.94, 512,989.08 and 105,326.94 is: 157,982.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,008.94 : 512,989.08 = 105,326.94 : x
  2. Step 2: Convert to fraction form
    342,008.94/512,989.08 = 105,326.94/x
  3. Step 3: Cross multiply
    342,008.94x = 512,989.08 × 105,326.94
  4. Step 4: Simplify right side
    342,008.94x = 54,031,570,049.82
  5. Step 5: Solve for x
    x = 54,031,570,049.82/342,008.94
  6. Step 6: Final answer
    x = 157,982.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.