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Finding the Fourth Proportional to 398,393.03, 549,782.47 and 217,104.98

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Solution

The fourth proportional to 398,393.03, 549,782.47 and 217,104.98 is: 299,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,393.03 : 549,782.47 = 217,104.98 : x
  2. Step 2: Convert to fraction form
    398,393.03/549,782.47 = 217,104.98/x
  3. Step 3: Cross multiply
    398,393.03x = 549,782.47 × 217,104.98
  4. Step 4: Simplify right side
    398,393.03x = 119,360,509,676.17
  5. Step 5: Solve for x
    x = 119,360,509,676.17/398,393.03
  6. Step 6: Final answer
    x = 299,604.91

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1.5x scale

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.