Home / 287,428.26-431,326.91-192,765.34

Finding the Fourth Proportional to 287,428.26, 431,326.91 and 192,765.34

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Solution

The fourth proportional to 287,428.26, 431,326.91 and 192,765.34 is: 289,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,428.26 : 431,326.91 = 192,765.34 : x
  2. Step 2: Convert to fraction form
    287,428.26/431,326.91 = 192,765.34/x
  3. Step 3: Cross multiply
    287,428.26x = 431,326.91 × 192,765.34
  4. Step 4: Simplify right side
    287,428.26x = 83,144,878,457.30
  5. Step 5: Solve for x
    x = 83,144,878,457.30/287,428.26
  6. Step 6: Final answer
    x = 289,271.76

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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.