Home / 211,293,187.20-316,939,780.80-145,536,220.80

Finding the Fourth Proportional to 211,293,187.20, 316,939,780.80 and 145,536,220.80

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Solution

The fourth proportional to 211,293,187.20, 316,939,780.80 and 145,536,220.80 is: 218,304,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,293,187.20 : 316,939,780.80 = 145,536,220.80 : x
  2. Step 2: Convert to fraction form
    211,293,187.20/316,939,780.80 = 145,536,220.80/x
  3. Step 3: Cross multiply
    211,293,187.20x = 316,939,780.80 × 145,536,220.80
  4. Step 4: Simplify right side
    211,293,187.20x = 46,126,217,918,812,408
  5. Step 5: Solve for x
    x = 46,126,217,918,812,408/211,293,187.20
  6. Step 6: Final answer
    x = 218,304,331.20

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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.