Home / 388,913.37-536,681.21-219,158.43

Finding the Fourth Proportional to 388,913.37, 536,681.21 and 219,158.43

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Solution

The fourth proportional to 388,913.37, 536,681.21 and 219,158.43 is: 302,427.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,913.37 : 536,681.21 = 219,158.43 : x
  2. Step 2: Convert to fraction form
    388,913.37/536,681.21 = 219,158.43/x
  3. Step 3: Cross multiply
    388,913.37x = 536,681.21 × 219,158.43
  4. Step 4: Simplify right side
    388,913.37x = 117,618,210,298.31
  5. Step 5: Solve for x
    x = 117,618,210,298.31/388,913.37
  6. Step 6: Final answer
    x = 302,427.79

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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.