Home / 395,282,890.65-545,490,378.29-219,097,356

Finding the Fourth Proportional to 395,282,890.65, 545,490,378.29 and 219,097,356

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Solution

The fourth proportional to 395,282,890.65, 545,490,378.29 and 219,097,356 is: 302,354,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,282,890.65 : 545,490,378.29 = 219,097,356 : x
  2. Step 2: Convert to fraction form
    395,282,890.65/545,490,378.29 = 219,097,356/x
  3. Step 3: Cross multiply
    395,282,890.65x = 545,490,378.29 × 219,097,356
  4. Step 4: Simplify right side
    395,282,890.65x = 119,515,499,606,778,800
  5. Step 5: Solve for x
    x = 119,515,499,606,778,800/395,282,890.65
  6. Step 6: Final answer
    x = 302,354,345.29

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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.