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Finding the Fourth Proportional to 545,625.47, 752,963.29 and 316,315.66

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Solution

The fourth proportional to 545,625.47, 752,963.29 and 316,315.66 is: 436,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,625.47 : 752,963.29 = 316,315.66 : x
  2. Step 2: Convert to fraction form
    545,625.47/752,963.29 = 316,315.66/x
  3. Step 3: Cross multiply
    545,625.47x = 752,963.29 × 316,315.66
  4. Step 4: Simplify right side
    545,625.47x = 238,174,078,432.30
  5. Step 5: Solve for x
    x = 238,174,078,432.30/545,625.47
  6. Step 6: Final answer
    x = 436,515.69

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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.