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Finding the Fourth Proportional to 388,683.68, 535,254.16 and 337,673.12

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Solution

The fourth proportional to 388,683.68, 535,254.16 and 337,673.12 is: 465,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,683.68 : 535,254.16 = 337,673.12 : x
  2. Step 2: Convert to fraction form
    388,683.68/535,254.16 = 337,673.12/x
  3. Step 3: Cross multiply
    388,683.68x = 535,254.16 × 337,673.12
  4. Step 4: Simplify right side
    388,683.68x = 180,740,942,200.18
  5. Step 5: Solve for x
    x = 180,740,942,200.18/388,683.68
  6. Step 6: Final answer
    x = 465,007.80

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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.