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Finding the Fourth Proportional to 551,574.40, 761,172.72 and 306,559.12

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Solution

The fourth proportional to 551,574.40, 761,172.72 and 306,559.12 is: 423,051.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,574.40 : 761,172.72 = 306,559.12 : x
  2. Step 2: Convert to fraction form
    551,574.40/761,172.72 = 306,559.12/x
  3. Step 3: Cross multiply
    551,574.40x = 761,172.72 × 306,559.12
  4. Step 4: Simplify right side
    551,574.40x = 233,344,439,211.21
  5. Step 5: Solve for x
    x = 233,344,439,211.21/551,574.40
  6. Step 6: Final answer
    x = 423,051.61

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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.