Home / 283,054.28-390,618-153,993.49

Finding the Fourth Proportional to 283,054.28, 390,618 and 153,993.49

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Solution

The fourth proportional to 283,054.28, 390,618 and 153,993.49 is: 212,512.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,054.28 : 390,618 = 153,993.49 : x
  2. Step 2: Convert to fraction form
    283,054.28/390,618 = 153,993.49/x
  3. Step 3: Cross multiply
    283,054.28x = 390,618 × 153,993.49
  4. Step 4: Simplify right side
    283,054.28x = 60,152,628,100.28
  5. Step 5: Solve for x
    x = 60,152,628,100.28/283,054.28
  6. Step 6: Final answer
    x = 212,512.69

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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.