Home / 398,973.83-549,940.71-269,865.22

Finding the Fourth Proportional to 398,973.83, 549,940.71 and 269,865.22

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Solution

The fourth proportional to 398,973.83, 549,940.71 and 269,865.22 is: 371,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,973.83 : 549,940.71 = 269,865.22 : x
  2. Step 2: Convert to fraction form
    398,973.83/549,940.71 = 269,865.22/x
  3. Step 3: Cross multiply
    398,973.83x = 549,940.71 × 269,865.22
  4. Step 4: Simplify right side
    398,973.83x = 148,409,869,341.78
  5. Step 5: Solve for x
    x = 148,409,869,341.78/398,973.83
  6. Step 6: Final answer
    x = 371,978.96

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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.