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Finding the Fourth Proportional to 361,434.98, 498,763.16 and 216,320.72

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Solution

The fourth proportional to 361,434.98, 498,763.16 and 216,320.72 is: 298,512.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,434.98 : 498,763.16 = 216,320.72 : x
  2. Step 2: Convert to fraction form
    361,434.98/498,763.16 = 216,320.72/x
  3. Step 3: Cross multiply
    361,434.98x = 498,763.16 × 216,320.72
  4. Step 4: Simplify right side
    361,434.98x = 107,892,807,668.39
  5. Step 5: Solve for x
    x = 107,892,807,668.39/361,434.98
  6. Step 6: Final answer
    x = 298,512.35

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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.