Home / 287,260.74-431,087.88-100,272.24

Finding the Fourth Proportional to 287,260.74, 431,087.88 and 100,272.24

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Solution

The fourth proportional to 287,260.74, 431,087.88 and 100,272.24 is: 150,477.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,260.74 : 431,087.88 = 100,272.24 : x
  2. Step 2: Convert to fraction form
    287,260.74/431,087.88 = 100,272.24/x
  3. Step 3: Cross multiply
    287,260.74x = 431,087.88 × 100,272.24
  4. Step 4: Simplify right side
    287,260.74x = 43,226,147,364.45
  5. Step 5: Solve for x
    x = 43,226,147,364.45/287,260.74
  6. Step 6: Final answer
    x = 150,477.05

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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.