Home / 399,277.18-551,065.78-253,931.42

Finding the Fourth Proportional to 399,277.18, 551,065.78 and 253,931.42

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Solution

The fourth proportional to 399,277.18, 551,065.78 and 253,931.42 is: 350,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,277.18 : 551,065.78 = 253,931.42 : x
  2. Step 2: Convert to fraction form
    399,277.18/551,065.78 = 253,931.42/x
  3. Step 3: Cross multiply
    399,277.18x = 551,065.78 × 253,931.42
  4. Step 4: Simplify right side
    399,277.18x = 139,932,917,723.89
  5. Step 5: Solve for x
    x = 139,932,917,723.89/399,277.18
  6. Step 6: Final answer
    x = 350,465.60

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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.