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Finding the Fourth Proportional to 418,262.90, 577,206.45 and 227,276.29

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Solution

The fourth proportional to 418,262.90, 577,206.45 and 227,276.29 is: 313,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,262.90 : 577,206.45 = 227,276.29 : x
  2. Step 2: Convert to fraction form
    418,262.90/577,206.45 = 227,276.29/x
  3. Step 3: Cross multiply
    418,262.90x = 577,206.45 × 227,276.29
  4. Step 4: Simplify right side
    418,262.90x = 131,185,340,520.07
  5. Step 5: Solve for x
    x = 131,185,340,520.07/418,262.90
  6. Step 6: Final answer
    x = 313,643.26

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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.