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Finding the Fourth Proportional to 484,804.40, 727,206.60 and 129,873.20

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Solution

The fourth proportional to 484,804.40, 727,206.60 and 129,873.20 is: 194,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,804.40 : 727,206.60 = 129,873.20 : x
  2. Step 2: Convert to fraction form
    484,804.40/727,206.60 = 129,873.20/x
  3. Step 3: Cross multiply
    484,804.40x = 727,206.60 × 129,873.20
  4. Step 4: Simplify right side
    484,804.40x = 94,444,648,203.12
  5. Step 5: Solve for x
    x = 94,444,648,203.12/484,804.40
  6. Step 6: Final answer
    x = 194,809.80

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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.