Home / 280,891.07-387,629.64-153,566.63

Finding the Fourth Proportional to 280,891.07, 387,629.64 and 153,566.63

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Solution

The fourth proportional to 280,891.07, 387,629.64 and 153,566.63 is: 211,921.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,891.07 : 387,629.64 = 153,566.63 : x
  2. Step 2: Convert to fraction form
    280,891.07/387,629.64 = 153,566.63/x
  3. Step 3: Cross multiply
    280,891.07x = 387,629.64 × 153,566.63
  4. Step 4: Simplify right side
    280,891.07x = 59,526,975,564.77
  5. Step 5: Solve for x
    x = 59,526,975,564.77/280,891.07
  6. Step 6: Final answer
    x = 211,921.93

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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.