Home / 398,476.23-549,892.36-217,187.60

Finding the Fourth Proportional to 398,476.23, 549,892.36 and 217,187.60

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Solution

The fourth proportional to 398,476.23, 549,892.36 and 217,187.60 is: 299,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,476.23 : 549,892.36 = 217,187.60 : x
  2. Step 2: Convert to fraction form
    398,476.23/549,892.36 = 217,187.60/x
  3. Step 3: Cross multiply
    398,476.23x = 549,892.36 × 217,187.60
  4. Step 4: Simplify right side
    398,476.23x = 119,429,802,541.90
  5. Step 5: Solve for x
    x = 119,429,802,541.90/398,476.23
  6. Step 6: Final answer
    x = 299,716.25

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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.