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Finding the Fourth Proportional to 418,326.40, 577,294.91 and 227,339.79

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Solution

The fourth proportional to 418,326.40, 577,294.91 and 227,339.79 is: 313,731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,326.40 : 577,294.91 = 227,339.79 : x
  2. Step 2: Convert to fraction form
    418,326.40/577,294.91 = 227,339.79/x
  3. Step 3: Cross multiply
    418,326.40x = 577,294.91 × 227,339.79
  4. Step 4: Simplify right side
    418,326.40x = 131,242,103,607.47
  5. Step 5: Solve for x
    x = 131,242,103,607.47/418,326.40
  6. Step 6: Final answer
    x = 313,731.34

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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.