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Finding the Fourth Proportional to 399,548.06, 551,393.08 and 229,782.32

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Solution

The fourth proportional to 399,548.06, 551,393.08 and 229,782.32 is: 317,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,548.06 : 551,393.08 = 229,782.32 : x
  2. Step 2: Convert to fraction form
    399,548.06/551,393.08 = 229,782.32/x
  3. Step 3: Cross multiply
    399,548.06x = 551,393.08 × 229,782.32
  4. Step 4: Simplify right side
    399,548.06x = 126,700,381,154.35
  5. Step 5: Solve for x
    x = 126,700,381,154.35/399,548.06
  6. Step 6: Final answer
    x = 317,109.24

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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.