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Finding the Fourth Proportional to 469,264.40, 647,240.90 and 308,060.63

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Solution

The fourth proportional to 469,264.40, 647,240.90 and 308,060.63 is: 424,897.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,264.40 : 647,240.90 = 308,060.63 : x
  2. Step 2: Convert to fraction form
    469,264.40/647,240.90 = 308,060.63/x
  3. Step 3: Cross multiply
    469,264.40x = 647,240.90 × 308,060.63
  4. Step 4: Simplify right side
    469,264.40x = 199,389,439,415.77
  5. Step 5: Solve for x
    x = 199,389,439,415.77/469,264.40
  6. Step 6: Final answer
    x = 424,897.86

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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.