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Finding the Fourth Proportional to 319,078.76, 440,331.60 and 175,843.92

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Solution

The fourth proportional to 319,078.76, 440,331.60 and 175,843.92 is: 242,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,078.76 : 440,331.60 = 175,843.92 : x
  2. Step 2: Convert to fraction form
    319,078.76/440,331.60 = 175,843.92/x
  3. Step 3: Cross multiply
    319,078.76x = 440,331.60 × 175,843.92
  4. Step 4: Simplify right side
    319,078.76x = 77,429,634,643.87
  5. Step 5: Solve for x
    x = 77,429,634,643.87/319,078.76
  6. Step 6: Final answer
    x = 242,666.21

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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.