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Finding the Fourth Proportional to 469,386.24, 647,583.24 and 308,328

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Solution

The fourth proportional to 469,386.24, 647,583.24 and 308,328 is: 425,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,386.24 : 647,583.24 = 308,328 : x
  2. Step 2: Convert to fraction form
    469,386.24/647,583.24 = 308,328/x
  3. Step 3: Cross multiply
    469,386.24x = 647,583.24 × 308,328
  4. Step 4: Simplify right side
    469,386.24x = 199,668,045,222.72
  5. Step 5: Solve for x
    x = 199,668,045,222.72/469,386.24
  6. Step 6: Final answer
    x = 425,381.12

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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.