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Finding the Fourth Proportional to 379,574.96, 569,421.48 and 126,777.20

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Solution

The fourth proportional to 379,574.96, 569,421.48 and 126,777.20 is: 190,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,574.96 : 569,421.48 = 126,777.20 : x
  2. Step 2: Convert to fraction form
    379,574.96/569,421.48 = 126,777.20/x
  3. Step 3: Cross multiply
    379,574.96x = 569,421.48 × 126,777.20
  4. Step 4: Simplify right side
    379,574.96x = 72,189,660,854.26
  5. Step 5: Solve for x
    x = 72,189,660,854.26/379,574.96
  6. Step 6: Final answer
    x = 190,185.52

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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.