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Finding the Fourth Proportional to 528,043.20, 791,870.40 and 173,068.80

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Solution

The fourth proportional to 528,043.20, 791,870.40 and 173,068.80 is: 259,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,043.20 : 791,870.40 = 173,068.80 : x
  2. Step 2: Convert to fraction form
    528,043.20/791,870.40 = 173,068.80/x
  3. Step 3: Cross multiply
    528,043.20x = 791,870.40 × 173,068.80
  4. Step 4: Simplify right side
    528,043.20x = 137,048,059,883.52
  5. Step 5: Solve for x
    x = 137,048,059,883.52/528,043.20
  6. Step 6: Final answer
    x = 259,539.48

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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.