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Finding the Fourth Proportional to 280,635.77, 387,277.29 and 151,574.33

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Solution

The fourth proportional to 280,635.77, 387,277.29 and 151,574.33 is: 209,172.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,635.77 : 387,277.29 = 151,574.33 : x
  2. Step 2: Convert to fraction form
    280,635.77/387,277.29 = 151,574.33/x
  3. Step 3: Cross multiply
    280,635.77x = 387,277.29 × 151,574.33
  4. Step 4: Simplify right side
    280,635.77x = 58,701,293,819.58
  5. Step 5: Solve for x
    x = 58,701,293,819.58/280,635.77
  6. Step 6: Final answer
    x = 209,172.53

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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.