Home / 390,677,382.32-539,114,988.69-231,914,291.54

Finding the Fourth Proportional to 390,677,382.32, 539,114,988.69 and 231,914,291.54

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Solution

The fourth proportional to 390,677,382.32, 539,114,988.69 and 231,914,291.54 is: 320,029,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,677,382.32 : 539,114,988.69 = 231,914,291.54 : x
  2. Step 2: Convert to fraction form
    390,677,382.32/539,114,988.69 = 231,914,291.54/x
  3. Step 3: Cross multiply
    390,677,382.32x = 539,114,988.69 × 231,914,291.54
  4. Step 4: Simplify right side
    390,677,382.32x = 125,028,470,657,940,896
  5. Step 5: Solve for x
    x = 125,028,470,657,940,896/390,677,382.32
  6. Step 6: Final answer
    x = 320,029,969.27

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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.