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Finding the Fourth Proportional to 262,369.74, 393,582.72 and 72,830.90

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Solution

The fourth proportional to 262,369.74, 393,582.72 and 72,830.90 is: 109,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,369.74 : 393,582.72 = 72,830.90 : x
  2. Step 2: Convert to fraction form
    262,369.74/393,582.72 = 72,830.90/x
  3. Step 3: Cross multiply
    262,369.74x = 393,582.72 × 72,830.90
  4. Step 4: Simplify right side
    262,369.74x = 28,664,983,722.05
  5. Step 5: Solve for x
    x = 28,664,983,722.05/262,369.74
  6. Step 6: Final answer
    x = 109,254.15

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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.