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Finding the Fourth Proportional to 257,275.62, 385,907.85 and 88,790.28

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Solution

The fourth proportional to 257,275.62, 385,907.85 and 88,790.28 is: 133,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,275.62 : 385,907.85 = 88,790.28 : x
  2. Step 2: Convert to fraction form
    257,275.62/385,907.85 = 88,790.28/x
  3. Step 3: Cross multiply
    257,275.62x = 385,907.85 × 88,790.28
  4. Step 4: Simplify right side
    257,275.62x = 34,264,866,055.70
  5. Step 5: Solve for x
    x = 34,264,866,055.70/257,275.62
  6. Step 6: Final answer
    x = 133,183.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.