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Finding the Fourth Proportional to 415,533.51, 623,360.21 and 131,127.39

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Solution

The fourth proportional to 415,533.51, 623,360.21 and 131,127.39 is: 196,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,533.51 : 623,360.21 = 131,127.39 : x
  2. Step 2: Convert to fraction form
    415,533.51/623,360.21 = 131,127.39/x
  3. Step 3: Cross multiply
    415,533.51x = 623,360.21 × 131,127.39
  4. Step 4: Simplify right side
    415,533.51x = 81,739,596,711.52
  5. Step 5: Solve for x
    x = 81,739,596,711.52/415,533.51
  6. Step 6: Final answer
    x = 196,710.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.