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Finding the Fourth Proportional to 551,674.60, 761,311.62 and 309,957.03

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Solution

The fourth proportional to 551,674.60, 761,311.62 and 309,957.03 is: 427,741.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,674.60 : 761,311.62 = 309,957.03 : x
  2. Step 2: Convert to fraction form
    551,674.60/761,311.62 = 309,957.03/x
  3. Step 3: Cross multiply
    551,674.60x = 761,311.62 × 309,957.03
  4. Step 4: Simplify right side
    551,674.60x = 235,973,889,768.08
  5. Step 5: Solve for x
    x = 235,973,889,768.08/551,674.60
  6. Step 6: Final answer
    x = 427,741.08

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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.