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Finding the Fourth Proportional to 265,993,818.80, 398,990,728.20 and 175,219,905.20

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Solution

The fourth proportional to 265,993,818.80, 398,990,728.20 and 175,219,905.20 is: 262,829,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,993,818.80 : 398,990,728.20 = 175,219,905.20 : x
  2. Step 2: Convert to fraction form
    265,993,818.80/398,990,728.20 = 175,219,905.20/x
  3. Step 3: Cross multiply
    265,993,818.80x = 398,990,728.20 × 175,219,905.20
  4. Step 4: Simplify right side
    265,993,818.80x = 69,911,117,570,882,960
  5. Step 5: Solve for x
    x = 69,911,117,570,882,960/265,993,818.80
  6. Step 6: Final answer
    x = 262,829,857.80

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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.