Home / 299,982,307.20-449,973,460.80-209,208,393.60

Finding the Fourth Proportional to 299,982,307.20, 449,973,460.80 and 209,208,393.60

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Solution

The fourth proportional to 299,982,307.20, 449,973,460.80 and 209,208,393.60 is: 313,812,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,982,307.20 : 449,973,460.80 = 209,208,393.60 : x
  2. Step 2: Convert to fraction form
    299,982,307.20/449,973,460.80 = 209,208,393.60/x
  3. Step 3: Cross multiply
    299,982,307.20x = 449,973,460.80 × 209,208,393.60
  4. Step 4: Simplify right side
    299,982,307.20x = 94,138,224,896,600,576
  5. Step 5: Solve for x
    x = 94,138,224,896,600,576/299,982,307.20
  6. Step 6: Final answer
    x = 313,812,590.40

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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.