Home / 319,428.90-440,590.86-259,002.12

Finding the Fourth Proportional to 319,428.90, 440,590.86 and 259,002.12

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Solution

The fourth proportional to 319,428.90, 440,590.86 and 259,002.12 is: 357,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,428.90 : 440,590.86 = 259,002.12 : x
  2. Step 2: Convert to fraction form
    319,428.90/440,590.86 = 259,002.12/x
  3. Step 3: Cross multiply
    319,428.90x = 440,590.86 × 259,002.12
  4. Step 4: Simplify right side
    319,428.90x = 114,113,966,792.62
  5. Step 5: Solve for x
    x = 114,113,966,792.62/319,428.90
  6. Step 6: Final answer
    x = 357,243.71

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1.5x scale

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.