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Finding the Fourth Proportional to 310,523.04, 428,676.48 and 210,445.92

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Solution

The fourth proportional to 310,523.04, 428,676.48 and 210,445.92 is: 290,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,523.04 : 428,676.48 = 210,445.92 : x
  2. Step 2: Convert to fraction form
    310,523.04/428,676.48 = 210,445.92/x
  3. Step 3: Cross multiply
    310,523.04x = 428,676.48 × 210,445.92
  4. Step 4: Simplify right side
    310,523.04x = 90,213,216,215.96
  5. Step 5: Solve for x
    x = 90,213,216,215.96/310,523.04
  6. Step 6: Final answer
    x = 290,520.20

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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.