Home / 398,531.04-549,969.12-217,242.72

Finding the Fourth Proportional to 398,531.04, 549,969.12 and 217,242.72

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Solution

The fourth proportional to 398,531.04, 549,969.12 and 217,242.72 is: 299,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,531.04 : 549,969.12 = 217,242.72 : x
  2. Step 2: Convert to fraction form
    398,531.04/549,969.12 = 217,242.72/x
  3. Step 3: Cross multiply
    398,531.04x = 549,969.12 × 217,242.72
  4. Step 4: Simplify right side
    398,531.04x = 119,476,787,544.81
  5. Step 5: Solve for x
    x = 119,476,787,544.81/398,531.04
  6. Step 6: Final answer
    x = 299,792.93

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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.