Home / 315,103,688.70-472,336,668.45-185,644,661.10

Finding the Fourth Proportional to 315,103,688.70, 472,336,668.45 and 185,644,661.10

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Solution

The fourth proportional to 315,103,688.70, 472,336,668.45 and 185,644,661.10 is: 278,279,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,103,688.70 : 472,336,668.45 = 185,644,661.10 : x
  2. Step 2: Convert to fraction form
    315,103,688.70/472,336,668.45 = 185,644,661.10/x
  3. Step 3: Cross multiply
    315,103,688.70x = 472,336,668.45 × 185,644,661.10
  4. Step 4: Simplify right side
    315,103,688.70x = 87,686,780,739,503,312
  5. Step 5: Solve for x
    x = 87,686,780,739,503,312/315,103,688.70
  6. Step 6: Final answer
    x = 278,279,131.23

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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.