Home / 382,856.32-528,359.04-221,718.40

Finding the Fourth Proportional to 382,856.32, 528,359.04 and 221,718.40

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Solution

The fourth proportional to 382,856.32, 528,359.04 and 221,718.40 is: 305,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,856.32 : 528,359.04 = 221,718.40 : x
  2. Step 2: Convert to fraction form
    382,856.32/528,359.04 = 221,718.40/x
  3. Step 3: Cross multiply
    382,856.32x = 528,359.04 × 221,718.40
  4. Step 4: Simplify right side
    382,856.32x = 117,146,920,974.34
  5. Step 5: Solve for x
    x = 117,146,920,974.34/382,856.32
  6. Step 6: Final answer
    x = 305,981.42

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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.