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Finding the Fourth Proportional to 266,973.93, 400,461 and 79,985.43

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Solution

The fourth proportional to 266,973.93, 400,461 and 79,985.43 is: 119,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,973.93 : 400,461 = 79,985.43 : x
  2. Step 2: Convert to fraction form
    266,973.93/400,461 = 79,985.43/x
  3. Step 3: Cross multiply
    266,973.93x = 400,461 × 79,985.43
  4. Step 4: Simplify right side
    266,973.93x = 32,031,045,283.23
  5. Step 5: Solve for x
    x = 32,031,045,283.23/266,973.93
  6. Step 6: Final answer
    x = 119,978.18

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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.