Home / 334,739.28-502,108.60-85,421.28

Finding the Fourth Proportional to 334,739.28, 502,108.60 and 85,421.28

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Solution

The fourth proportional to 334,739.28, 502,108.60 and 85,421.28 is: 128,131.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,739.28 : 502,108.60 = 85,421.28 : x
  2. Step 2: Convert to fraction form
    334,739.28/502,108.60 = 85,421.28/x
  3. Step 3: Cross multiply
    334,739.28x = 502,108.60 × 85,421.28
  4. Step 4: Simplify right side
    334,739.28x = 42,890,759,311.01
  5. Step 5: Solve for x
    x = 42,890,759,311.01/334,739.28
  6. Step 6: Final answer
    x = 128,131.84

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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.