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Finding the Fourth Proportional to 511,030.40, 766,660.80 and 156,060.80

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Solution

The fourth proportional to 511,030.40, 766,660.80 and 156,060.80 is: 234,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,030.40 : 766,660.80 = 156,060.80 : x
  2. Step 2: Convert to fraction form
    511,030.40/766,660.80 = 156,060.80/x
  3. Step 3: Cross multiply
    511,030.40x = 766,660.80 × 156,060.80
  4. Step 4: Simplify right side
    511,030.40x = 119,645,697,776.64
  5. Step 5: Solve for x
    x = 119,645,697,776.64/511,030.40
  6. Step 6: Final answer
    x = 234,126.38

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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.