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Finding the Fourth Proportional to 385,386.64, 531,896.56 and 264,428.12

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Solution

The fourth proportional to 385,386.64, 531,896.56 and 264,428.12 is: 364,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386.64 : 531,896.56 = 264,428.12 : x
  2. Step 2: Convert to fraction form
    385,386.64/531,896.56 = 264,428.12/x
  3. Step 3: Cross multiply
    385,386.64x = 531,896.56 × 264,428.12
  4. Step 4: Simplify right side
    385,386.64x = 140,648,407,395.27
  5. Step 5: Solve for x
    x = 140,648,407,395.27/385,386.64
  6. Step 6: Final answer
    x = 364,954.03

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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.