Home / 287,583.70-431,375.55-265,932.40

Finding the Fourth Proportional to 287,583.70, 431,375.55 and 265,932.40

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Solution

The fourth proportional to 287,583.70, 431,375.55 and 265,932.40 is: 398,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,583.70 : 431,375.55 = 265,932.40 : x
  2. Step 2: Convert to fraction form
    287,583.70/431,375.55 = 265,932.40/x
  3. Step 3: Cross multiply
    287,583.70x = 431,375.55 × 265,932.40
  4. Step 4: Simplify right side
    287,583.70x = 114,716,735,312.82
  5. Step 5: Solve for x
    x = 114,716,735,312.82/287,583.70
  6. Step 6: Final answer
    x = 398,898.60

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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.