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Finding the Fourth Proportional to 383,304.69, 528,671.21 and 360,702.45

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Solution

The fourth proportional to 383,304.69, 528,671.21 and 360,702.45 is: 497,497.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,304.69 : 528,671.21 = 360,702.45 : x
  2. Step 2: Convert to fraction form
    383,304.69/528,671.21 = 360,702.45/x
  3. Step 3: Cross multiply
    383,304.69x = 528,671.21 × 360,702.45
  4. Step 4: Simplify right side
    383,304.69x = 190,692,998,887.95
  5. Step 5: Solve for x
    x = 190,692,998,887.95/383,304.69
  6. Step 6: Final answer
    x = 497,497.17

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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.