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Finding the Fourth Proportional to 310,748.64, 429,255.25 and 243,613.21

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Solution

The fourth proportional to 310,748.64, 429,255.25 and 243,613.21 is: 336,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,748.64 : 429,255.25 = 243,613.21 : x
  2. Step 2: Convert to fraction form
    310,748.64/429,255.25 = 243,613.21/x
  3. Step 3: Cross multiply
    310,748.64x = 429,255.25 × 243,613.21
  4. Step 4: Simplify right side
    310,748.64x = 104,572,245,997.51
  5. Step 5: Solve for x
    x = 104,572,245,997.51/310,748.64
  6. Step 6: Final answer
    x = 336,517.15

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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.