Home / 282,106.28-389,307.13-154,782.78

Finding the Fourth Proportional to 282,106.28, 389,307.13 and 154,782.78

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Solution

The fourth proportional to 282,106.28, 389,307.13 and 154,782.78 is: 213,600.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,106.28 : 389,307.13 = 154,782.78 : x
  2. Step 2: Convert to fraction form
    282,106.28/389,307.13 = 154,782.78/x
  3. Step 3: Cross multiply
    282,106.28x = 389,307.13 × 154,782.78
  4. Step 4: Simplify right side
    282,106.28x = 60,258,039,468.26
  5. Step 5: Solve for x
    x = 60,258,039,468.26/282,106.28
  6. Step 6: Final answer
    x = 213,600.49

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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.