Home / 388,427.64-536,040.08-218,667.72

Finding the Fourth Proportional to 388,427.64, 536,040.08 and 218,667.72

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Solution

The fourth proportional to 388,427.64, 536,040.08 and 218,667.72 is: 301,767.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,427.64 : 536,040.08 = 218,667.72 : x
  2. Step 2: Convert to fraction form
    388,427.64/536,040.08 = 218,667.72/x
  3. Step 3: Cross multiply
    388,427.64x = 536,040.08 × 218,667.72
  4. Step 4: Simplify right side
    388,427.64x = 117,214,662,122.22
  5. Step 5: Solve for x
    x = 117,214,662,122.22/388,427.64
  6. Step 6: Final answer
    x = 301,767.05

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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.