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Finding the Fourth Proportional to 545,079.25, 752,040.06 and 309,294.46

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Solution

The fourth proportional to 545,079.25, 752,040.06 and 309,294.46 is: 426,730.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,079.25 : 752,040.06 = 309,294.46 : x
  2. Step 2: Convert to fraction form
    545,079.25/752,040.06 = 309,294.46/x
  3. Step 3: Cross multiply
    545,079.25x = 752,040.06 × 309,294.46
  4. Step 4: Simplify right side
    545,079.25x = 232,601,824,256.07
  5. Step 5: Solve for x
    x = 232,601,824,256.07/545,079.25
  6. Step 6: Final answer
    x = 426,730.29

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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.