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Finding the Fourth Proportional to 399,310.98, 550,984.16 and 235,944.77

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Solution

The fourth proportional to 399,310.98, 550,984.16 and 235,944.77 is: 325,565.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,310.98 : 550,984.16 = 235,944.77 : x
  2. Step 2: Convert to fraction form
    399,310.98/550,984.16 = 235,944.77/x
  3. Step 3: Cross multiply
    399,310.98x = 550,984.16 × 235,944.77
  4. Step 4: Simplify right side
    399,310.98x = 130,001,830,904.84
  5. Step 5: Solve for x
    x = 130,001,830,904.84/399,310.98
  6. Step 6: Final answer
    x = 325,565.38

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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.