Home / 290,587,147.14-401,009,980.30-158,428,108.58

Finding the Fourth Proportional to 290,587,147.14, 401,009,980.30 and 158,428,108.58

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Solution

The fourth proportional to 290,587,147.14, 401,009,980.30 and 158,428,108.58 is: 218,630,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,587,147.14 : 401,009,980.30 = 158,428,108.58 : x
  2. Step 2: Convert to fraction form
    290,587,147.14/401,009,980.30 = 158,428,108.58/x
  3. Step 3: Cross multiply
    290,587,147.14x = 401,009,980.30 × 158,428,108.58
  4. Step 4: Simplify right side
    290,587,147.14x = 63,531,252,698,230,936
  5. Step 5: Solve for x
    x = 63,531,252,698,230,936/290,587,147.14
  6. Step 6: Final answer
    x = 218,630,635.67

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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.