Home / 319,198,390.17-440,493,579.47-172,520,674.17

Finding the Fourth Proportional to 319,198,390.17, 440,493,579.47 and 172,520,674.17

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Solution

The fourth proportional to 319,198,390.17, 440,493,579.47 and 172,520,674.17 is: 238,078,422.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,390.17 : 440,493,579.47 = 172,520,674.17 : x
  2. Step 2: Convert to fraction form
    319,198,390.17/440,493,579.47 = 172,520,674.17/x
  3. Step 3: Cross multiply
    319,198,390.17x = 440,493,579.47 × 172,520,674.17
  4. Step 4: Simplify right side
    319,198,390.17x = 75,994,249,298,152,176
  5. Step 5: Solve for x
    x = 75,994,249,298,152,176/319,198,390.17
  6. Step 6: Final answer
    x = 238,078,422.82

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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.