Home / 336,742.20-505,113.30-87,424.20

Finding the Fourth Proportional to 336,742.20, 505,113.30 and 87,424.20

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Solution

The fourth proportional to 336,742.20, 505,113.30 and 87,424.20 is: 131,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,742.20 : 505,113.30 = 87,424.20 : x
  2. Step 2: Convert to fraction form
    336,742.20/505,113.30 = 87,424.20/x
  3. Step 3: Cross multiply
    336,742.20x = 505,113.30 × 87,424.20
  4. Step 4: Simplify right side
    336,742.20x = 44,159,126,161.86
  5. Step 5: Solve for x
    x = 44,159,126,161.86/336,742.20
  6. Step 6: Final answer
    x = 131,136.30

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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.