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Finding the Fourth Proportional to 621,271.76, 857,337.89 and 349,332.67

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Solution

The fourth proportional to 621,271.76, 857,337.89 and 349,332.67 is: 482,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,271.76 : 857,337.89 = 349,332.67 : x
  2. Step 2: Convert to fraction form
    621,271.76/857,337.89 = 349,332.67/x
  3. Step 3: Cross multiply
    621,271.76x = 857,337.89 × 349,332.67
  4. Step 4: Simplify right side
    621,271.76x = 299,496,128,708.35
  5. Step 5: Solve for x
    x = 299,496,128,708.35/621,271.76
  6. Step 6: Final answer
    x = 482,069.44

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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.