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Finding the Fourth Proportional to 388,378, 535,974.60 and 237,445.84

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Solution

The fourth proportional to 388,378, 535,974.60 and 237,445.84 is: 327,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,378 : 535,974.60 = 237,445.84 : x
  2. Step 2: Convert to fraction form
    388,378/535,974.60 = 237,445.84/x
  3. Step 3: Cross multiply
    388,378x = 535,974.60 × 237,445.84
  4. Step 4: Simplify right side
    388,378x = 127,264,939,115.66
  5. Step 5: Solve for x
    x = 127,264,939,115.66/388,378
  6. Step 6: Final answer
    x = 327,683.18

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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.