Home / 390,533,649.28-538,900,817.21-231,736,410.34

Finding the Fourth Proportional to 390,533,649.28, 538,900,817.21 and 231,736,410.34

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Solution

The fourth proportional to 390,533,649.28, 538,900,817.21 and 231,736,410.34 is: 319,775,110.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,533,649.28 : 538,900,817.21 = 231,736,410.34 : x
  2. Step 2: Convert to fraction form
    390,533,649.28/538,900,817.21 = 231,736,410.34/x
  3. Step 3: Cross multiply
    390,533,649.28x = 538,900,817.21 × 231,736,410.34
  4. Step 4: Simplify right side
    390,533,649.28x = 124,882,940,907,903,296
  5. Step 5: Solve for x
    x = 124,882,940,907,903,296/390,533,649.28
  6. Step 6: Final answer
    x = 319,775,110.64

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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.