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Finding the Fourth Proportional to 552,319.90, 762,194.19 and 310,602.40

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Solution

The fourth proportional to 552,319.90, 762,194.19 and 310,602.40 is: 428,627.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,319.90 : 762,194.19 = 310,602.40 : x
  2. Step 2: Convert to fraction form
    552,319.90/762,194.19 = 310,602.40/x
  3. Step 3: Cross multiply
    552,319.90x = 762,194.19 × 310,602.40
  4. Step 4: Simplify right side
    552,319.90x = 236,739,348,226.67
  5. Step 5: Solve for x
    x = 236,739,348,226.67/552,319.90
  6. Step 6: Final answer
    x = 428,627.23

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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.