Home / 210,135,288.80-314,777,780.40-145,512,063.20

Finding the Fourth Proportional to 210,135,288.80, 314,777,780.40 and 145,512,063.20

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Solution

The fourth proportional to 210,135,288.80, 314,777,780.40 and 145,512,063.20 is: 217,973,689.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,135,288.80 : 314,777,780.40 = 145,512,063.20 : x
  2. Step 2: Convert to fraction form
    210,135,288.80/314,777,780.40 = 145,512,063.20/x
  3. Step 3: Cross multiply
    210,135,288.80x = 314,777,780.40 × 145,512,063.20
  4. Step 4: Simplify right side
    210,135,288.80x = 45,803,964,275,520,512
  5. Step 5: Solve for x
    x = 45,803,964,275,520,512/210,135,288.80
  6. Step 6: Final answer
    x = 217,973,689.89

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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.