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Finding the Fourth Proportional to 364,073.80, 545,721.90 and 139,347.40

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Solution

The fourth proportional to 364,073.80, 545,721.90 and 139,347.40 is: 208,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,073.80 : 545,721.90 = 139,347.40 : x
  2. Step 2: Convert to fraction form
    364,073.80/545,721.90 = 139,347.40/x
  3. Step 3: Cross multiply
    364,073.80x = 545,721.90 × 139,347.40
  4. Step 4: Simplify right side
    364,073.80x = 76,044,927,888.06
  5. Step 5: Solve for x
    x = 76,044,927,888.06/364,073.80
  6. Step 6: Final answer
    x = 208,872.29

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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.