Home / 399,713.27-551,597.58-218,421.02

Finding the Fourth Proportional to 399,713.27, 551,597.58 and 218,421.02

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Solution

The fourth proportional to 399,713.27, 551,597.58 and 218,421.02 is: 301,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,713.27 : 551,597.58 = 218,421.02 : x
  2. Step 2: Convert to fraction form
    399,713.27/551,597.58 = 218,421.02/x
  3. Step 3: Cross multiply
    399,713.27x = 551,597.58 × 218,421.02
  4. Step 4: Simplify right side
    399,713.27x = 120,480,507,432.13
  5. Step 5: Solve for x
    x = 120,480,507,432.13/399,713.27
  6. Step 6: Final answer
    x = 301,417.34

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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.