Home / 319,741.40-479,612.10-306,090.20

Finding the Fourth Proportional to 319,741.40, 479,612.10 and 306,090.20

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Solution

The fourth proportional to 319,741.40, 479,612.10 and 306,090.20 is: 459,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,741.40 : 479,612.10 = 306,090.20 : x
  2. Step 2: Convert to fraction form
    319,741.40/479,612.10 = 306,090.20/x
  3. Step 3: Cross multiply
    319,741.40x = 479,612.10 × 306,090.20
  4. Step 4: Simplify right side
    319,741.40x = 146,804,563,611.42
  5. Step 5: Solve for x
    x = 146,804,563,611.42/319,741.40
  6. Step 6: Final answer
    x = 459,135.30

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Similar ratio
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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.