Home / 390,482,852.37-538,864,857.95-214,273,796.51

Finding the Fourth Proportional to 390,482,852.37, 538,864,857.95 and 214,273,796.51

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Solution

The fourth proportional to 390,482,852.37, 538,864,857.95 and 214,273,796.51 is: 295,697,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,852.37 : 538,864,857.95 = 214,273,796.51 : x
  2. Step 2: Convert to fraction form
    390,482,852.37/538,864,857.95 = 214,273,796.51/x
  3. Step 3: Cross multiply
    390,482,852.37x = 538,864,857.95 × 214,273,796.51
  4. Step 4: Simplify right side
    390,482,852.37x = 115,464,618,915,002,672
  5. Step 5: Solve for x
    x = 115,464,618,915,002,672/390,482,852.37
  6. Step 6: Final answer
    x = 295,697,027.96

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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.