Home / 371,638,425.28-512,715,873.80-212,783,649.87

Finding the Fourth Proportional to 371,638,425.28, 512,715,873.80 and 212,783,649.87

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Solution

The fourth proportional to 371,638,425.28, 512,715,873.80 and 212,783,649.87 is: 293,558,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,638,425.28 : 512,715,873.80 = 212,783,649.87 : x
  2. Step 2: Convert to fraction form
    371,638,425.28/512,715,873.80 = 212,783,649.87/x
  3. Step 3: Cross multiply
    371,638,425.28x = 512,715,873.80 × 212,783,649.87
  4. Step 4: Simplify right side
    371,638,425.28x = 109,097,554,973,668,176
  5. Step 5: Solve for x
    x = 109,097,554,973,668,176/371,638,425.28
  6. Step 6: Final answer
    x = 293,558,328.62

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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.