Home / 390,032,158.00-538,251,313.14-211,421,896.14

Finding the Fourth Proportional to 390,032,158.00, 538,251,313.14 and 211,421,896.14

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Solution

The fourth proportional to 390,032,158.00, 538,251,313.14 and 211,421,896.14 is: 291,765,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,032,158.00 : 538,251,313.14 = 211,421,896.14 : x
  2. Step 2: Convert to fraction form
    390,032,158.00/538,251,313.14 = 211,421,896.14/x
  3. Step 3: Cross multiply
    390,032,158.00x = 538,251,313.14 × 211,421,896.14
  4. Step 4: Simplify right side
    390,032,158.00x = 113,798,113,224,415,024
  5. Step 5: Solve for x
    x = 113,798,113,224,415,024/390,032,158.00
  6. Step 6: Final answer
    x = 291,765,975.93

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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.