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Finding the Fourth Proportional to 385,168.68, 531,666.37 and 264,708.72

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Solution

The fourth proportional to 385,168.68, 531,666.37 and 264,708.72 is: 365,389.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,168.68 : 531,666.37 = 264,708.72 : x
  2. Step 2: Convert to fraction form
    385,168.68/531,666.37 = 264,708.72/x
  3. Step 3: Cross multiply
    385,168.68x = 531,666.37 × 264,708.72
  4. Step 4: Simplify right side
    385,168.68x = 140,736,724,269.75
  5. Step 5: Solve for x
    x = 140,736,724,269.75/385,168.68
  6. Step 6: Final answer
    x = 365,389.84

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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.