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Finding the Fourth Proportional to 383,870.40, 575,848.80 and 117,628.80

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Solution

The fourth proportional to 383,870.40, 575,848.80 and 117,628.80 is: 176,456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,870.40 : 575,848.80 = 117,628.80 : x
  2. Step 2: Convert to fraction form
    383,870.40/575,848.80 = 117,628.80/x
  3. Step 3: Cross multiply
    383,870.40x = 575,848.80 × 117,628.80
  4. Step 4: Simplify right side
    383,870.40x = 67,736,403,325.44
  5. Step 5: Solve for x
    x = 67,736,403,325.44/383,870.40
  6. Step 6: Final answer
    x = 176,456.44

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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.