Home / 290,341,974.80-435,516,504.60-85,874,182.40

Finding the Fourth Proportional to 290,341,974.80, 435,516,504.60 and 85,874,182.40

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Solution

The fourth proportional to 290,341,974.80, 435,516,504.60 and 85,874,182.40 is: 128,812,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,341,974.80 : 435,516,504.60 = 85,874,182.40 : x
  2. Step 2: Convert to fraction form
    290,341,974.80/435,516,504.60 = 85,874,182.40/x
  3. Step 3: Cross multiply
    290,341,974.80x = 435,516,504.60 × 85,874,182.40
  4. Step 4: Simplify right side
    290,341,974.80x = 37,399,623,754,230,840
  5. Step 5: Solve for x
    x = 37,399,623,754,230,840/290,341,974.80
  6. Step 6: Final answer
    x = 128,812,321.33

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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.