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Finding the Fourth Proportional to 399,603.04, 599,444.72 and 115,300.64

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Solution

The fourth proportional to 399,603.04, 599,444.72 and 115,300.64 is: 172,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,603.04 : 599,444.72 = 115,300.64 : x
  2. Step 2: Convert to fraction form
    399,603.04/599,444.72 = 115,300.64/x
  3. Step 3: Cross multiply
    399,603.04x = 599,444.72 × 115,300.64
  4. Step 4: Simplify right side
    399,603.04x = 69,116,359,860.62
  5. Step 5: Solve for x
    x = 69,116,359,860.62/399,603.04
  6. Step 6: Final answer
    x = 172,962.55

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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.