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Finding the Fourth Proportional to 418,838.45, 578,011.55 and 227,858.67

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Solution

The fourth proportional to 418,838.45, 578,011.55 and 227,858.67 is: 314,452.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,838.45 : 578,011.55 = 227,858.67 : x
  2. Step 2: Convert to fraction form
    418,838.45/578,011.55 = 227,858.67/x
  3. Step 3: Cross multiply
    418,838.45x = 578,011.55 × 227,858.67
  4. Step 4: Simplify right side
    418,838.45x = 131,704,941,888.35
  5. Step 5: Solve for x
    x = 131,704,941,888.35/418,838.45
  6. Step 6: Final answer
    x = 314,452.85

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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.