Home / 282,022.50-389,191.05-154,698.40

Finding the Fourth Proportional to 282,022.50, 389,191.05 and 154,698.40

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Solution

The fourth proportional to 282,022.50, 389,191.05 and 154,698.40 is: 213,483.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,022.50 : 389,191.05 = 154,698.40 : x
  2. Step 2: Convert to fraction form
    282,022.50/389,191.05 = 154,698.40/x
  3. Step 3: Cross multiply
    282,022.50x = 389,191.05 × 154,698.40
  4. Step 4: Simplify right side
    282,022.50x = 60,207,231,756.34
  5. Step 5: Solve for x
    x = 60,207,231,756.34/282,022.50
  6. Step 6: Final answer
    x = 213,483.79

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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.