Home / 390,032,161.01-538,251,317.28-211,421,899.13

Finding the Fourth Proportional to 390,032,161.01, 538,251,317.28 and 211,421,899.13

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Solution

The fourth proportional to 390,032,161.01, 538,251,317.28 and 211,421,899.13 is: 291,765,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,032,161.01 : 538,251,317.28 = 211,421,899.13 : x
  2. Step 2: Convert to fraction form
    390,032,161.01/538,251,317.28 = 211,421,899.13/x
  3. Step 3: Cross multiply
    390,032,161.01x = 538,251,317.28 × 211,421,899.13
  4. Step 4: Simplify right side
    390,032,161.01x = 113,798,115,709,907,408
  5. Step 5: Solve for x
    x = 113,798,115,709,907,408/390,032,161.01
  6. Step 6: Final answer
    x = 291,765,980.06

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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.