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Finding the Fourth Proportional to 391,175.06, 539,291.50 and 334,423.98

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Solution

The fourth proportional to 391,175.06, 539,291.50 and 334,423.98 is: 461,051.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,175.06 : 539,291.50 = 334,423.98 : x
  2. Step 2: Convert to fraction form
    391,175.06/539,291.50 = 334,423.98/x
  3. Step 3: Cross multiply
    391,175.06x = 539,291.50 × 334,423.98
  4. Step 4: Simplify right side
    391,175.06x = 180,352,009,810.17
  5. Step 5: Solve for x
    x = 180,352,009,810.17/391,175.06
  6. Step 6: Final answer
    x = 461,051.91

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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.