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Finding the Fourth Proportional to 385,143.80, 531,632.06 and 264,683.84

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Solution

The fourth proportional to 385,143.80, 531,632.06 and 264,683.84 is: 365,355.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,143.80 : 531,632.06 = 264,683.84 : x
  2. Step 2: Convert to fraction form
    385,143.80/531,632.06 = 264,683.84/x
  3. Step 3: Cross multiply
    385,143.80x = 531,632.06 × 264,683.84
  4. Step 4: Simplify right side
    385,143.80x = 140,714,415,107.91
  5. Step 5: Solve for x
    x = 140,714,415,107.91/385,143.80
  6. Step 6: Final answer
    x = 365,355.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.