Home / 212,859,032.10-319,288,548.15-209,271,805.35

Finding the Fourth Proportional to 212,859,032.10, 319,288,548.15 and 209,271,805.35

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Solution

The fourth proportional to 212,859,032.10, 319,288,548.15 and 209,271,805.35 is: 313,907,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,859,032.10 : 319,288,548.15 = 209,271,805.35 : x
  2. Step 2: Convert to fraction form
    212,859,032.10/319,288,548.15 = 209,271,805.35/x
  3. Step 3: Cross multiply
    212,859,032.10x = 319,288,548.15 × 209,271,805.35
  4. Step 4: Simplify right side
    212,859,032.10x = 66,818,090,898,930,896
  5. Step 5: Solve for x
    x = 66,818,090,898,930,896/212,859,032.10
  6. Step 6: Final answer
    x = 313,907,708.03

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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.