Home / 315,259,868.62-435,056,021.10-172,205,749.96

Finding the Fourth Proportional to 315,259,868.62, 435,056,021.10 and 172,205,749.96

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Solution

The fourth proportional to 315,259,868.62, 435,056,021.10 and 172,205,749.96 is: 237,642,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,259,868.62 : 435,056,021.10 = 172,205,749.96 : x
  2. Step 2: Convert to fraction form
    315,259,868.62/435,056,021.10 = 172,205,749.96/x
  3. Step 3: Cross multiply
    315,259,868.62x = 435,056,021.10 × 172,205,749.96
  4. Step 4: Simplify right side
    315,259,868.62x = 74,919,148,388,139,088
  5. Step 5: Solve for x
    x = 74,919,148,388,139,088/315,259,868.62
  6. Step 6: Final answer
    x = 237,642,516.05

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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.