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Finding the Fourth Proportional to 485,145.48, 726,913.70 and 295,030.76

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Solution

The fourth proportional to 485,145.48, 726,913.70 and 295,030.76 is: 442,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,145.48 : 726,913.70 = 295,030.76 : x
  2. Step 2: Convert to fraction form
    485,145.48/726,913.70 = 295,030.76/x
  3. Step 3: Cross multiply
    485,145.48x = 726,913.70 × 295,030.76
  4. Step 4: Simplify right side
    485,145.48x = 214,461,901,365.41
  5. Step 5: Solve for x
    x = 214,461,901,365.41/485,145.48
  6. Step 6: Final answer
    x = 442,056.89

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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.