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Finding the Fourth Proportional to 545,955, 753,329.25 and 316,467.51

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Solution

The fourth proportional to 545,955, 753,329.25 and 316,467.51 is: 436,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,955 : 753,329.25 = 316,467.51 : x
  2. Step 2: Convert to fraction form
    545,955/753,329.25 = 316,467.51/x
  3. Step 3: Cross multiply
    545,955x = 753,329.25 × 316,467.51
  4. Step 4: Simplify right side
    545,955x = 238,404,231,957.67
  5. Step 5: Solve for x
    x = 238,404,231,957.67/545,955
  6. Step 6: Final answer
    x = 436,673.78

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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.