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Finding the Fourth Proportional to 418,645.72, 577,746.30 and 239,832.28

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Solution

The fourth proportional to 418,645.72, 577,746.30 and 239,832.28 is: 330,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,645.72 : 577,746.30 = 239,832.28 : x
  2. Step 2: Convert to fraction form
    418,645.72/577,746.30 = 239,832.28/x
  3. Step 3: Cross multiply
    418,645.72x = 577,746.30 × 239,832.28
  4. Step 4: Simplify right side
    418,645.72x = 138,562,212,390.56
  5. Step 5: Solve for x
    x = 138,562,212,390.56/418,645.72
  6. Step 6: Final answer
    x = 330,977.26

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1.5x scale

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.