Home / 388,134,521.01-535,621,582.53-211,921,972.65

Finding the Fourth Proportional to 388,134,521.01, 535,621,582.53 and 211,921,972.65

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Solution

The fourth proportional to 388,134,521.01, 535,621,582.53 and 211,921,972.65 is: 292,450,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,134,521.01 : 535,621,582.53 = 211,921,972.65 : x
  2. Step 2: Convert to fraction form
    388,134,521.01/535,621,582.53 = 211,921,972.65/x
  3. Step 3: Cross multiply
    388,134,521.01x = 535,621,582.53 × 211,921,972.65
  4. Step 4: Simplify right side
    388,134,521.01x = 113,509,982,363,672,368
  5. Step 5: Solve for x
    x = 113,509,982,363,672,368/388,134,521.01
  6. Step 6: Final answer
    x = 292,450,107.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.