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Finding the Fourth Proportional to 334,899.36, 502,348.32 and 85,580.64

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Solution

The fourth proportional to 334,899.36, 502,348.32 and 85,580.64 is: 128,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,899.36 : 502,348.32 = 85,580.64 : x
  2. Step 2: Convert to fraction form
    334,899.36/502,348.32 = 85,580.64/x
  3. Step 3: Cross multiply
    334,899.36x = 502,348.32 × 85,580.64
  4. Step 4: Simplify right side
    334,899.36x = 42,991,290,728.52
  5. Step 5: Solve for x
    x = 42,991,290,728.52/334,899.36
  6. Step 6: Final answer
    x = 128,370.78

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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.