Home / 319,435,748.32-440,821,626.64-172,758,032.32

Finding the Fourth Proportional to 319,435,748.32, 440,821,626.64 and 172,758,032.32

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Solution

The fourth proportional to 319,435,748.32, 440,821,626.64 and 172,758,032.32 is: 238,406,243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,435,748.32 : 440,821,626.64 = 172,758,032.32 : x
  2. Step 2: Convert to fraction form
    319,435,748.32/440,821,626.64 = 172,758,032.32/x
  3. Step 3: Cross multiply
    319,435,748.32x = 440,821,626.64 × 172,758,032.32
  4. Step 4: Simplify right side
    319,435,748.32x = 76,155,476,822,428,080
  5. Step 5: Solve for x
    x = 76,155,476,822,428,080/319,435,748.32
  6. Step 6: Final answer
    x = 238,406,243.58

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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.