Home / 382,810.16-528,247.51-221,675.65

Finding the Fourth Proportional to 382,810.16, 528,247.51 and 221,675.65

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Solution

The fourth proportional to 382,810.16, 528,247.51 and 221,675.65 is: 305,894.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,810.16 : 528,247.51 = 221,675.65 : x
  2. Step 2: Convert to fraction form
    382,810.16/528,247.51 = 221,675.65/x
  3. Step 3: Cross multiply
    382,810.16x = 528,247.51 × 221,675.65
  4. Step 4: Simplify right side
    382,810.16x = 117,099,608,265.32
  5. Step 5: Solve for x
    x = 117,099,608,265.32/382,810.16
  6. Step 6: Final answer
    x = 305,894.72

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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.