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Finding the Fourth Proportional to 491,420.80, 737,030.40 and 136,345.60

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Solution

The fourth proportional to 491,420.80, 737,030.40 and 136,345.60 is: 204,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,420.80 : 737,030.40 = 136,345.60 : x
  2. Step 2: Convert to fraction form
    491,420.80/737,030.40 = 136,345.60/x
  3. Step 3: Cross multiply
    491,420.80x = 737,030.40 × 136,345.60
  4. Step 4: Simplify right side
    491,420.80x = 100,490,852,106.24
  5. Step 5: Solve for x
    x = 100,490,852,106.24/491,420.80
  6. Step 6: Final answer
    x = 204,490.43

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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.