Home / 215,758,621.60-323,637,932.40-212,175,440.80

Finding the Fourth Proportional to 215,758,621.60, 323,637,932.40 and 212,175,440.80

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Solution

The fourth proportional to 215,758,621.60, 323,637,932.40 and 212,175,440.80 is: 318,263,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,758,621.60 : 323,637,932.40 = 212,175,440.80 : x
  2. Step 2: Convert to fraction form
    215,758,621.60/323,637,932.40 = 212,175,440.80/x
  3. Step 3: Cross multiply
    215,758,621.60x = 323,637,932.40 × 212,175,440.80
  4. Step 4: Simplify right side
    215,758,621.60x = 68,668,020,966,570,600
  5. Step 5: Solve for x
    x = 68,668,020,966,570,600/215,758,621.60
  6. Step 6: Final answer
    x = 318,263,161.20

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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.