Home / 353,804,282.72-488,286,231.36-212,721,459.50

Finding the Fourth Proportional to 353,804,282.72, 488,286,231.36 and 212,721,459.50

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Solution

The fourth proportional to 353,804,282.72, 488,286,231.36 and 212,721,459.50 is: 293,577,451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,804,282.72 : 488,286,231.36 = 212,721,459.50 : x
  2. Step 2: Convert to fraction form
    353,804,282.72/488,286,231.36 = 212,721,459.50/x
  3. Step 3: Cross multiply
    353,804,282.72x = 488,286,231.36 × 212,721,459.50
  4. Step 4: Simplify right side
    353,804,282.72x = 103,868,959,788,653,872
  5. Step 5: Solve for x
    x = 103,868,959,788,653,872/353,804,282.72
  6. Step 6: Final answer
    x = 293,577,451.89

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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.