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Finding the Fourth Proportional to 483,702.86, 725,570.68 and 128,717.22

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Solution

The fourth proportional to 483,702.86, 725,570.68 and 128,717.22 is: 193,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,702.86 : 725,570.68 = 128,717.22 : x
  2. Step 2: Convert to fraction form
    483,702.86/725,570.68 = 128,717.22/x
  3. Step 3: Cross multiply
    483,702.86x = 725,570.68 × 128,717.22
  4. Step 4: Simplify right side
    483,702.86x = 93,393,443,242.21
  5. Step 5: Solve for x
    x = 93,393,443,242.21/483,702.86
  6. Step 6: Final answer
    x = 193,080.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.