Home / 209,236,969.32-288,786,994.70-138,547,898.74

Finding the Fourth Proportional to 209,236,969.32, 288,786,994.70 and 138,547,898.74

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Solution

The fourth proportional to 209,236,969.32, 288,786,994.70 and 138,547,898.74 is: 191,222,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,236,969.32 : 288,786,994.70 = 138,547,898.74 : x
  2. Step 2: Convert to fraction form
    209,236,969.32/288,786,994.70 = 138,547,898.74/x
  3. Step 3: Cross multiply
    209,236,969.32x = 288,786,994.70 × 138,547,898.74
  4. Step 4: Simplify right side
    209,236,969.32x = 40,010,831,299,124,520
  5. Step 5: Solve for x
    x = 40,010,831,299,124,520/209,236,969.32
  6. Step 6: Final answer
    x = 191,222,571.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.