Home / 399,315.36-551,276.64-272,177.76

Finding the Fourth Proportional to 399,315.36, 551,276.64 and 272,177.76

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Solution

The fourth proportional to 399,315.36, 551,276.64 and 272,177.76 is: 375,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,315.36 : 551,276.64 = 272,177.76 : x
  2. Step 2: Convert to fraction form
    399,315.36/551,276.64 = 272,177.76/x
  3. Step 3: Cross multiply
    399,315.36x = 551,276.64 × 272,177.76
  4. Step 4: Simplify right side
    399,315.36x = 150,045,241,015.53
  5. Step 5: Solve for x
    x = 150,045,241,015.53/399,315.36
  6. Step 6: Final answer
    x = 375,756.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.