Home / 651,380.09-977,162.88-202,139.78

Finding the Fourth Proportional to 651,380.09, 977,162.88 and 202,139.78

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Solution

The fourth proportional to 651,380.09, 977,162.88 and 202,139.78 is: 303,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,380.09 : 977,162.88 = 202,139.78 : x
  2. Step 2: Convert to fraction form
    651,380.09/977,162.88 = 202,139.78/x
  3. Step 3: Cross multiply
    651,380.09x = 977,162.88 × 202,139.78
  4. Step 4: Simplify right side
    651,380.09x = 197,523,489,587.37
  5. Step 5: Solve for x
    x = 197,523,489,587.37/651,380.09
  6. Step 6: Final answer
    x = 303,238.45

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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.