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Finding the Fourth Proportional to 398,031.44, 549,293.20 and 216,753.23

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Solution

The fourth proportional to 398,031.44, 549,293.20 and 216,753.23 is: 299,124.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,031.44 : 549,293.20 = 216,753.23 : x
  2. Step 2: Convert to fraction form
    398,031.44/549,293.20 = 216,753.23/x
  3. Step 3: Cross multiply
    398,031.44x = 549,293.20 × 216,753.23
  4. Step 4: Simplify right side
    398,031.44x = 119,061,076,148.39
  5. Step 5: Solve for x
    x = 119,061,076,148.39/398,031.44
  6. Step 6: Final answer
    x = 299,124.81

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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.