Home / 398,440.56-549,831.96-217,148.60

Finding the Fourth Proportional to 398,440.56, 549,831.96 and 217,148.60

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Solution

The fourth proportional to 398,440.56, 549,831.96 and 217,148.60 is: 299,656.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,440.56 : 549,831.96 = 217,148.60 : x
  2. Step 2: Convert to fraction form
    398,440.56/549,831.96 = 217,148.60/x
  3. Step 3: Cross multiply
    398,440.56x = 549,831.96 × 217,148.60
  4. Step 4: Simplify right side
    398,440.56x = 119,395,240,349.26
  5. Step 5: Solve for x
    x = 119,395,240,349.26/398,440.56
  6. Step 6: Final answer
    x = 299,656.34

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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.