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Finding the Fourth Proportional to 356,632.95, 491,866.48 and 313,520.26

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Solution

The fourth proportional to 356,632.95, 491,866.48 and 313,520.26 is: 432,405.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,632.95 : 491,866.48 = 313,520.26 : x
  2. Step 2: Convert to fraction form
    356,632.95/491,866.48 = 313,520.26/x
  3. Step 3: Cross multiply
    356,632.95x = 491,866.48 × 313,520.26
  4. Step 4: Simplify right side
    356,632.95x = 154,210,106,694.89
  5. Step 5: Solve for x
    x = 154,210,106,694.89/356,632.95
  6. Step 6: Final answer
    x = 432,405.66

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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.