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Finding the Fourth Proportional to 398,934.30, 598,401.45 and 162,446.70

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Solution

The fourth proportional to 398,934.30, 598,401.45 and 162,446.70 is: 243,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,934.30 : 598,401.45 = 162,446.70 : x
  2. Step 2: Convert to fraction form
    398,934.30/598,401.45 = 162,446.70/x
  3. Step 3: Cross multiply
    398,934.30x = 598,401.45 × 162,446.70
  4. Step 4: Simplify right side
    398,934.30x = 97,208,340,827.72
  5. Step 5: Solve for x
    x = 97,208,340,827.72/398,934.30
  6. Step 6: Final answer
    x = 243,670.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.