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Finding the Fourth Proportional to 454,218.66, 626,835.95 and 260,661.78

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Solution

The fourth proportional to 454,218.66, 626,835.95 and 260,661.78 is: 359,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,218.66 : 626,835.95 = 260,661.78 : x
  2. Step 2: Convert to fraction form
    454,218.66/626,835.95 = 260,661.78/x
  3. Step 3: Cross multiply
    454,218.66x = 626,835.95 × 260,661.78
  4. Step 4: Simplify right side
    454,218.66x = 163,392,174,494.99
  5. Step 5: Solve for x
    x = 163,392,174,494.99/454,218.66
  6. Step 6: Final answer
    x = 359,721.40

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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.