Home / 209,236,929.60-288,786,938.40-138,547,858.56

Finding the Fourth Proportional to 209,236,929.60, 288,786,938.40 and 138,547,858.56

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Solution

The fourth proportional to 209,236,929.60, 288,786,938.40 and 138,547,858.56 is: 191,222,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,236,929.60 : 288,786,938.40 = 138,547,858.56 : x
  2. Step 2: Convert to fraction form
    209,236,929.60/288,786,938.40 = 138,547,858.56/x
  3. Step 3: Cross multiply
    209,236,929.60x = 288,786,938.40 × 138,547,858.56
  4. Step 4: Simplify right side
    209,236,929.60x = 40,010,811,895,418,632
  5. Step 5: Solve for x
    x = 40,010,811,895,418,632/209,236,929.60
  6. Step 6: Final answer
    x = 191,222,514.94

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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.