Home / 385,632.20-578,448.30-136,314.20

Finding the Fourth Proportional to 385,632.20, 578,448.30 and 136,314.20

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Solution

The fourth proportional to 385,632.20, 578,448.30 and 136,314.20 is: 204,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,632.20 : 578,448.30 = 136,314.20 : x
  2. Step 2: Convert to fraction form
    385,632.20/578,448.30 = 136,314.20/x
  3. Step 3: Cross multiply
    385,632.20x = 578,448.30 × 136,314.20
  4. Step 4: Simplify right side
    385,632.20x = 78,850,717,255.86
  5. Step 5: Solve for x
    x = 78,850,717,255.86/385,632.20
  6. Step 6: Final answer
    x = 204,471.30

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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.