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Finding the Fourth Proportional to 418,648.53, 577,750.22 and 239,835.09

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Solution

The fourth proportional to 418,648.53, 577,750.22 and 239,835.09 is: 330,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,648.53 : 577,750.22 = 239,835.09 : x
  2. Step 2: Convert to fraction form
    418,648.53/577,750.22 = 239,835.09/x
  3. Step 3: Cross multiply
    418,648.53x = 577,750.22 × 239,835.09
  4. Step 4: Simplify right side
    418,648.53x = 138,564,776,011.22
  5. Step 5: Solve for x
    x = 138,564,776,011.22/418,648.53
  6. Step 6: Final answer
    x = 330,981.16

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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.