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Finding the Fourth Proportional to 399,671.76, 599,547.48 and 115,369.20

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Solution

The fourth proportional to 399,671.76, 599,547.48 and 115,369.20 is: 173,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,671.76 : 599,547.48 = 115,369.20 : x
  2. Step 2: Convert to fraction form
    399,671.76/599,547.48 = 115,369.20/x
  3. Step 3: Cross multiply
    399,671.76x = 599,547.48 × 115,369.20
  4. Step 4: Simplify right side
    399,671.76x = 69,169,313,129.62
  5. Step 5: Solve for x
    x = 69,169,313,129.62/399,671.76
  6. Step 6: Final answer
    x = 173,065.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.