Home / 289,336.03-399,191.01-187,440.05

Finding the Fourth Proportional to 289,336.03, 399,191.01 and 187,440.05

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Solution

The fourth proportional to 289,336.03, 399,191.01 and 187,440.05 is: 258,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,336.03 : 399,191.01 = 187,440.05 : x
  2. Step 2: Convert to fraction form
    289,336.03/399,191.01 = 187,440.05/x
  3. Step 3: Cross multiply
    289,336.03x = 399,191.01 × 187,440.05
  4. Step 4: Simplify right side
    289,336.03x = 74,824,382,873.95
  5. Step 5: Solve for x
    x = 74,824,382,873.95/289,336.03
  6. Step 6: Final answer
    x = 258,607.21

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1.5x scale

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.