Home / 209,236,955.69-288,786,975.90-138,547,885.16

Finding the Fourth Proportional to 209,236,955.69, 288,786,975.90 and 138,547,885.16

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Solution

The fourth proportional to 209,236,955.69, 288,786,975.90 and 138,547,885.16 is: 191,222,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,236,955.69 : 288,786,975.90 = 138,547,885.16 : x
  2. Step 2: Convert to fraction form
    209,236,955.69/288,786,975.90 = 138,547,885.16/x
  3. Step 3: Cross multiply
    209,236,955.69x = 288,786,975.90 × 138,547,885.16
  4. Step 4: Simplify right side
    209,236,955.69x = 40,010,824,772,696,880
  5. Step 5: Solve for x
    x = 40,010,824,772,696,880/209,236,955.69
  6. Step 6: Final answer
    x = 191,222,552.64

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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.