Home / 289,039,575.38-398,873,603.72-156,880,564.64

Finding the Fourth Proportional to 289,039,575.38, 398,873,603.72 and 156,880,564.64

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Solution

The fourth proportional to 289,039,575.38, 398,873,603.72 and 156,880,564.64 is: 216,494,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,039,575.38 : 398,873,603.72 = 156,880,564.64 : x
  2. Step 2: Convert to fraction form
    289,039,575.38/398,873,603.72 = 156,880,564.64/x
  3. Step 3: Cross multiply
    289,039,575.38x = 398,873,603.72 × 156,880,564.64
  4. Step 4: Simplify right side
    289,039,575.38x = 62,575,516,171,585,200
  5. Step 5: Solve for x
    x = 62,575,516,171,585,200/289,039,575.38
  6. Step 6: Final answer
    x = 216,494,630.85

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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.