Home / 265,787,686.80-398,681,530.20-212,039,974.80

Finding the Fourth Proportional to 265,787,686.80, 398,681,530.20 and 212,039,974.80

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Solution

The fourth proportional to 265,787,686.80, 398,681,530.20 and 212,039,974.80 is: 318,059,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,787,686.80 : 398,681,530.20 = 212,039,974.80 : x
  2. Step 2: Convert to fraction form
    265,787,686.80/398,681,530.20 = 212,039,974.80/x
  3. Step 3: Cross multiply
    265,787,686.80x = 398,681,530.20 × 212,039,974.80
  4. Step 4: Simplify right side
    265,787,686.80x = 84,536,421,616,833,440
  5. Step 5: Solve for x
    x = 84,536,421,616,833,440/265,787,686.80
  6. Step 6: Final answer
    x = 318,059,962.20

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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.