Home / 398,290.82-549,638.26-217,002.18

Finding the Fourth Proportional to 398,290.82, 549,638.26 and 217,002.18

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Solution

The fourth proportional to 398,290.82, 549,638.26 and 217,002.18 is: 299,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,290.82 : 549,638.26 = 217,002.18 : x
  2. Step 2: Convert to fraction form
    398,290.82/549,638.26 = 217,002.18/x
  3. Step 3: Cross multiply
    398,290.82x = 549,638.26 × 217,002.18
  4. Step 4: Simplify right side
    398,290.82x = 119,272,700,631.41
  5. Step 5: Solve for x
    x = 119,272,700,631.41/398,290.82
  6. Step 6: Final answer
    x = 299,461.33

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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.