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Finding the Fourth Proportional to 378,953.65, 523,043.95 and 249,915.41

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Solution

The fourth proportional to 378,953.65, 523,043.95 and 249,915.41 is: 344,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,953.65 : 523,043.95 = 249,915.41 : x
  2. Step 2: Convert to fraction form
    378,953.65/523,043.95 = 249,915.41/x
  3. Step 3: Cross multiply
    378,953.65x = 523,043.95 × 249,915.41
  4. Step 4: Simplify right side
    378,953.65x = 130,716,740,597.05
  5. Step 5: Solve for x
    x = 130,716,740,597.05/378,953.65
  6. Step 6: Final answer
    x = 344,941.24

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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.