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Finding the Fourth Proportional to 383,459.20, 575,138.40 and 117,246.40

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Solution

The fourth proportional to 383,459.20, 575,138.40 and 117,246.40 is: 175,854.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,459.20 : 575,138.40 = 117,246.40 : x
  2. Step 2: Convert to fraction form
    383,459.20/575,138.40 = 117,246.40/x
  3. Step 3: Cross multiply
    383,459.20x = 575,138.40 × 117,246.40
  4. Step 4: Simplify right side
    383,459.20x = 67,432,906,901.76
  5. Step 5: Solve for x
    x = 67,432,906,901.76/383,459.20
  6. Step 6: Final answer
    x = 175,854.19

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1.5x scale

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.