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Finding the Fourth Proportional to 279,122.64, 385,147.08 and 171,710.16

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Solution

The fourth proportional to 279,122.64, 385,147.08 and 171,710.16 is: 236,934.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,122.64 : 385,147.08 = 171,710.16 : x
  2. Step 2: Convert to fraction form
    279,122.64/385,147.08 = 171,710.16/x
  3. Step 3: Cross multiply
    279,122.64x = 385,147.08 × 171,710.16
  4. Step 4: Simplify right side
    279,122.64x = 66,133,666,730.33
  5. Step 5: Solve for x
    x = 66,133,666,730.33/279,122.64
  6. Step 6: Final answer
    x = 236,934.08

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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.