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Finding the Fourth Proportional to 555,145.47, 766,100.54 and 300,496.66

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Solution

The fourth proportional to 555,145.47, 766,100.54 and 300,496.66 is: 414,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,145.47 : 766,100.54 = 300,496.66 : x
  2. Step 2: Convert to fraction form
    555,145.47/766,100.54 = 300,496.66/x
  3. Step 3: Cross multiply
    555,145.47x = 766,100.54 × 300,496.66
  4. Step 4: Simplify right side
    555,145.47x = 230,210,652,330.19
  5. Step 5: Solve for x
    x = 230,210,652,330.19/555,145.47
  6. Step 6: Final answer
    x = 414,685.28

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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.