Home / 290,341,974.30-435,516,503.85-85,874,181.90

Finding the Fourth Proportional to 290,341,974.30, 435,516,503.85 and 85,874,181.90

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Solution

The fourth proportional to 290,341,974.30, 435,516,503.85 and 85,874,181.90 is: 128,812,320.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,341,974.30 : 435,516,503.85 = 85,874,181.90 : x
  2. Step 2: Convert to fraction form
    290,341,974.30/435,516,503.85 = 85,874,181.90/x
  3. Step 3: Cross multiply
    290,341,974.30x = 435,516,503.85 × 85,874,181.90
  4. Step 4: Simplify right side
    290,341,974.30x = 37,399,623,472,066,952
  5. Step 5: Solve for x
    x = 37,399,623,472,066,952/290,341,974.30
  6. Step 6: Final answer
    x = 128,812,320.58

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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.