Home / 398,975.08-549,942.43-269,866.47

Finding the Fourth Proportional to 398,975.08, 549,942.43 and 269,866.47

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Solution

The fourth proportional to 398,975.08, 549,942.43 and 269,866.47 is: 371,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,975.08 : 549,942.43 = 269,866.47 : x
  2. Step 2: Convert to fraction form
    398,975.08/549,942.43 = 269,866.47/x
  3. Step 3: Cross multiply
    398,975.08x = 549,942.43 × 269,866.47
  4. Step 4: Simplify right side
    398,975.08x = 148,411,022,287.32
  5. Step 5: Solve for x
    x = 148,411,022,287.32/398,975.08
  6. Step 6: Final answer
    x = 371,980.68

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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.