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Finding the Fourth Proportional to 418,245.61, 577,180.74 and 227,259.76

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Solution

The fourth proportional to 418,245.61, 577,180.74 and 227,259.76 is: 313,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,245.61 : 577,180.74 = 227,259.76 : x
  2. Step 2: Convert to fraction form
    418,245.61/577,180.74 = 227,259.76/x
  3. Step 3: Cross multiply
    418,245.61x = 577,180.74 × 227,259.76
  4. Step 4: Simplify right side
    418,245.61x = 131,169,956,449.02
  5. Step 5: Solve for x
    x = 131,169,956,449.02/418,245.61
  6. Step 6: Final answer
    x = 313,619.45

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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.