Home / 354,294,742.40-531,442,113.60-321,983,129.60

Finding the Fourth Proportional to 354,294,742.40, 531,442,113.60 and 321,983,129.60

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Solution

The fourth proportional to 354,294,742.40, 531,442,113.60 and 321,983,129.60 is: 482,974,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294,742.40 : 531,442,113.60 = 321,983,129.60 : x
  2. Step 2: Convert to fraction form
    354,294,742.40/531,442,113.60 = 321,983,129.60/x
  3. Step 3: Cross multiply
    354,294,742.40x = 531,442,113.60 × 321,983,129.60
  4. Step 4: Simplify right side
    354,294,742.40x = 171,115,394,938,166,752
  5. Step 5: Solve for x
    x = 171,115,394,938,166,752/354,294,742.40
  6. Step 6: Final answer
    x = 482,974,694.40

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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.