Home / 369,913.47-555,161.91-189,991.62

Finding the Fourth Proportional to 369,913.47, 555,161.91 and 189,991.62

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Solution

The fourth proportional to 369,913.47, 555,161.91 and 189,991.62 is: 285,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,913.47 : 555,161.91 = 189,991.62 : x
  2. Step 2: Convert to fraction form
    369,913.47/555,161.91 = 189,991.62/x
  3. Step 3: Cross multiply
    369,913.47x = 555,161.91 × 189,991.62
  4. Step 4: Simplify right side
    369,913.47x = 105,476,110,643.19
  5. Step 5: Solve for x
    x = 105,476,110,643.19/369,913.47
  6. Step 6: Final answer
    x = 285,137.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.