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Finding the Fourth Proportional to 319,490.16, 440,896.88 and 176,249.92

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Solution

The fourth proportional to 319,490.16, 440,896.88 and 176,249.92 is: 243,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,490.16 : 440,896.88 = 176,249.92 : x
  2. Step 2: Convert to fraction form
    319,490.16/440,896.88 = 176,249.92/x
  3. Step 3: Cross multiply
    319,490.16x = 440,896.88 × 176,249.92
  4. Step 4: Simplify right side
    319,490.16x = 77,708,039,828.25
  5. Step 5: Solve for x
    x = 77,708,039,828.25/319,490.16
  6. Step 6: Final answer
    x = 243,225.14

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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.