Home / 469,370.24-647,561.20-308,312

Finding the Fourth Proportional to 469,370.24, 647,561.20 and 308,312

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Solution

The fourth proportional to 469,370.24, 647,561.20 and 308,312 is: 425,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,370.24 : 647,561.20 = 308,312 : x
  2. Step 2: Convert to fraction form
    469,370.24/647,561.20 = 308,312/x
  3. Step 3: Cross multiply
    469,370.24x = 647,561.20 × 308,312
  4. Step 4: Simplify right side
    469,370.24x = 199,650,888,694.40
  5. Step 5: Solve for x
    x = 199,650,888,694.40/469,370.24
  6. Step 6: Final answer
    x = 425,359.07

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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.