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Finding the Fourth Proportional to 383,671.20, 575,506.80 and 117,432.30

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Solution

The fourth proportional to 383,671.20, 575,506.80 and 117,432.30 is: 176,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,671.20 : 575,506.80 = 117,432.30 : x
  2. Step 2: Convert to fraction form
    383,671.20/575,506.80 = 117,432.30/x
  3. Step 3: Cross multiply
    383,671.20x = 575,506.80 × 117,432.30
  4. Step 4: Simplify right side
    383,671.20x = 67,583,087,189.64
  5. Step 5: Solve for x
    x = 67,583,087,189.64/383,671.20
  6. Step 6: Final answer
    x = 176,148.45

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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.