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Finding the Fourth Proportional to 418,267.05, 577,206.60 and 236,978.58

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Solution

The fourth proportional to 418,267.05, 577,206.60 and 236,978.58 is: 327,029.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,267.05 : 577,206.60 = 236,978.58 : x
  2. Step 2: Convert to fraction form
    418,267.05/577,206.60 = 236,978.58/x
  3. Step 3: Cross multiply
    418,267.05x = 577,206.60 × 236,978.58
  4. Step 4: Simplify right side
    418,267.05x = 136,785,600,434.63
  5. Step 5: Solve for x
    x = 136,785,600,434.63/418,267.05
  6. Step 6: Final answer
    x = 327,029.35

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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.