Home / 257,319.45-385,994.30-99,548.73

Finding the Fourth Proportional to 257,319.45, 385,994.30 and 99,548.73

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Solution

The fourth proportional to 257,319.45, 385,994.30 and 99,548.73 is: 149,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,319.45 : 385,994.30 = 99,548.73 : x
  2. Step 2: Convert to fraction form
    257,319.45/385,994.30 = 99,548.73/x
  3. Step 3: Cross multiply
    257,319.45x = 385,994.30 × 99,548.73
  4. Step 4: Simplify right side
    257,319.45x = 38,425,241,854.50
  5. Step 5: Solve for x
    x = 38,425,241,854.50/257,319.45
  6. Step 6: Final answer
    x = 149,328.94

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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.