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Finding the Fourth Proportional to 355,075.57, 489,996.70 and 193,931.25

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Solution

The fourth proportional to 355,075.57, 489,996.70 and 193,931.25 is: 267,620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,075.57 : 489,996.70 = 193,931.25 : x
  2. Step 2: Convert to fraction form
    355,075.57/489,996.70 = 193,931.25/x
  3. Step 3: Cross multiply
    355,075.57x = 489,996.70 × 193,931.25
  4. Step 4: Simplify right side
    355,075.57x = 95,025,672,526.88
  5. Step 5: Solve for x
    x = 95,025,672,526.88/355,075.57
  6. Step 6: Final answer
    x = 267,620.98

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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.