Home / 280,623.26-387,265.78-153,307.06

Finding the Fourth Proportional to 280,623.26, 387,265.78 and 153,307.06

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Solution

The fourth proportional to 280,623.26, 387,265.78 and 153,307.06 is: 211,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,623.26 : 387,265.78 = 153,307.06 : x
  2. Step 2: Convert to fraction form
    280,623.26/387,265.78 = 153,307.06/x
  3. Step 3: Cross multiply
    280,623.26x = 387,265.78 × 153,307.06
  4. Step 4: Simplify right side
    280,623.26x = 59,370,578,170.41
  5. Step 5: Solve for x
    x = 59,370,578,170.41/280,623.26
  6. Step 6: Final answer
    x = 211,566.85

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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.