Home / 312,322,459.95-431,005,035.60-173,102,209.83

Finding the Fourth Proportional to 312,322,459.95, 431,005,035.60 and 173,102,209.83

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Solution

The fourth proportional to 312,322,459.95, 431,005,035.60 and 173,102,209.83 is: 238,881,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,322,459.95 : 431,005,035.60 = 173,102,209.83 : x
  2. Step 2: Convert to fraction form
    312,322,459.95/431,005,035.60 = 173,102,209.83/x
  3. Step 3: Cross multiply
    312,322,459.95x = 431,005,035.60 × 173,102,209.83
  4. Step 4: Simplify right side
    312,322,459.95x = 74,607,924,110,217,824
  5. Step 5: Solve for x
    x = 74,607,924,110,217,824/312,322,459.95
  6. Step 6: Final answer
    x = 238,881,072.22

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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.