Home / 282,919.49-390,431.66-153,860.73

Finding the Fourth Proportional to 282,919.49, 390,431.66 and 153,860.73

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Solution

The fourth proportional to 282,919.49, 390,431.66 and 153,860.73 is: 212,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,919.49 : 390,431.66 = 153,860.73 : x
  2. Step 2: Convert to fraction form
    282,919.49/390,431.66 = 153,860.73/x
  3. Step 3: Cross multiply
    282,919.49x = 390,431.66 × 153,860.73
  4. Step 4: Simplify right side
    282,919.49x = 60,072,100,222.71
  5. Step 5: Solve for x
    x = 60,072,100,222.71/282,919.49
  6. Step 6: Final answer
    x = 212,329.31

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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.