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Finding the Fourth Proportional to 279,543.96, 385,760.10 and 170,830.08

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Solution

The fourth proportional to 279,543.96, 385,760.10 and 170,830.08 is: 235,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,543.96 : 385,760.10 = 170,830.08 : x
  2. Step 2: Convert to fraction form
    279,543.96/385,760.10 = 170,830.08/x
  3. Step 3: Cross multiply
    279,543.96x = 385,760.10 × 170,830.08
  4. Step 4: Simplify right side
    279,543.96x = 65,899,429,384.42
  5. Step 5: Solve for x
    x = 65,899,429,384.42/279,543.96
  6. Step 6: Final answer
    x = 235,739.06

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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.