Home / 265,326,310.40-397,989,465.60-81,093,430.40

Finding the Fourth Proportional to 265,326,310.40, 397,989,465.60 and 81,093,430.40

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Solution

The fourth proportional to 265,326,310.40, 397,989,465.60 and 81,093,430.40 is: 121,640,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,326,310.40 : 397,989,465.60 = 81,093,430.40 : x
  2. Step 2: Convert to fraction form
    265,326,310.40/397,989,465.60 = 81,093,430.40/x
  3. Step 3: Cross multiply
    265,326,310.40x = 397,989,465.60 × 81,093,430.40
  4. Step 4: Simplify right side
    265,326,310.40x = 32,274,331,028,566,800
  5. Step 5: Solve for x
    x = 32,274,331,028,566,800/265,326,310.40
  6. Step 6: Final answer
    x = 121,640,145.60

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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.