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Finding the Fourth Proportional to 497,015.80, 745,620.90 and 212,705.80

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Solution

The fourth proportional to 497,015.80, 745,620.90 and 212,705.80 is: 319,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,015.80 : 745,620.90 = 212,705.80 : x
  2. Step 2: Convert to fraction form
    497,015.80/745,620.90 = 212,705.80/x
  3. Step 3: Cross multiply
    497,015.80x = 745,620.90 × 212,705.80
  4. Step 4: Simplify right side
    497,015.80x = 158,597,890,031.22
  5. Step 5: Solve for x
    x = 158,597,890,031.22/497,015.80
  6. Step 6: Final answer
    x = 319,100.30

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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.