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Finding the Fourth Proportional to 511,729.60, 767,594.40 and 156,740.80

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Solution

The fourth proportional to 511,729.60, 767,594.40 and 156,740.80 is: 235,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,729.60 : 767,594.40 = 156,740.80 : x
  2. Step 2: Convert to fraction form
    511,729.60/767,594.40 = 156,740.80/x
  3. Step 3: Cross multiply
    511,729.60x = 767,594.40 × 156,740.80
  4. Step 4: Simplify right side
    511,729.60x = 120,313,360,331.52
  5. Step 5: Solve for x
    x = 120,313,360,331.52/511,729.60
  6. Step 6: Final answer
    x = 235,111.20

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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.