Home / 382,985.97-528,440.52-221,831.40

Finding the Fourth Proportional to 382,985.97, 528,440.52 and 221,831.40

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Solution

The fourth proportional to 382,985.97, 528,440.52 and 221,831.40 is: 306,080.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,985.97 : 528,440.52 = 221,831.40 : x
  2. Step 2: Convert to fraction form
    382,985.97/528,440.52 = 221,831.40/x
  3. Step 3: Cross multiply
    382,985.97x = 528,440.52 × 221,831.40
  4. Step 4: Simplify right side
    382,985.97x = 117,224,700,368.33
  5. Step 5: Solve for x
    x = 117,224,700,368.33/382,985.97
  6. Step 6: Final answer
    x = 306,080.93

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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.