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Finding the Fourth Proportional to 418,479.40, 577,507.28 and 227,496.89

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Solution

The fourth proportional to 418,479.40, 577,507.28 and 227,496.89 is: 313,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,479.40 : 577,507.28 = 227,496.89 : x
  2. Step 2: Convert to fraction form
    418,479.40/577,507.28 = 227,496.89/x
  3. Step 3: Cross multiply
    418,479.40x = 577,507.28 × 227,496.89
  4. Step 4: Simplify right side
    418,479.40x = 131,381,110,152.36
  5. Step 5: Solve for x
    x = 131,381,110,152.36/418,479.40
  6. Step 6: Final answer
    x = 313,948.81

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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.