Home / 645,342.66-968,167.08-218,870.37

Finding the Fourth Proportional to 645,342.66, 968,167.08 and 218,870.37

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Solution

The fourth proportional to 645,342.66, 968,167.08 and 218,870.37 is: 328,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,342.66 : 968,167.08 = 218,870.37 : x
  2. Step 2: Convert to fraction form
    645,342.66/968,167.08 = 218,870.37/x
  3. Step 3: Cross multiply
    645,342.66x = 968,167.08 × 218,870.37
  4. Step 4: Simplify right side
    645,342.66x = 211,903,087,021.42
  5. Step 5: Solve for x
    x = 211,903,087,021.42/645,342.66
  6. Step 6: Final answer
    x = 328,357.48

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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.