Home / 515,145.72-772,121.34-195,094.20

Finding the Fourth Proportional to 515,145.72, 772,121.34 and 195,094.20

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Solution

The fourth proportional to 515,145.72, 772,121.34 and 195,094.20 is: 292,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,145.72 : 772,121.34 = 195,094.20 : x
  2. Step 2: Convert to fraction form
    515,145.72/772,121.34 = 195,094.20/x
  3. Step 3: Cross multiply
    515,145.72x = 772,121.34 × 195,094.20
  4. Step 4: Simplify right side
    515,145.72x = 150,636,395,130.23
  5. Step 5: Solve for x
    x = 150,636,395,130.23/515,145.72
  6. Step 6: Final answer
    x = 292,415.12

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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.