Home / 265,787,680.80-398,681,521.20-212,039,968.80

Finding the Fourth Proportional to 265,787,680.80, 398,681,521.20 and 212,039,968.80

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Solution

The fourth proportional to 265,787,680.80, 398,681,521.20 and 212,039,968.80 is: 318,059,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,787,680.80 : 398,681,521.20 = 212,039,968.80 : x
  2. Step 2: Convert to fraction form
    265,787,680.80/398,681,521.20 = 212,039,968.80/x
  3. Step 3: Cross multiply
    265,787,680.80x = 398,681,521.20 × 212,039,968.80
  4. Step 4: Simplify right side
    265,787,680.80x = 84,536,417,316,384,544
  5. Step 5: Solve for x
    x = 84,536,417,316,384,544/265,787,680.80
  6. Step 6: Final answer
    x = 318,059,953.20

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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.