Home / 280,330.16-387,055.86-173,045.84

Finding the Fourth Proportional to 280,330.16, 387,055.86 and 173,045.84

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Solution

The fourth proportional to 280,330.16, 387,055.86 and 173,045.84 is: 238,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,330.16 : 387,055.86 = 173,045.84 : x
  2. Step 2: Convert to fraction form
    280,330.16/387,055.86 = 173,045.84/x
  3. Step 3: Cross multiply
    280,330.16x = 387,055.86 × 173,045.84
  4. Step 4: Simplify right side
    280,330.16x = 66,978,406,420.62
  5. Step 5: Solve for x
    x = 66,978,406,420.62/280,330.16
  6. Step 6: Final answer
    x = 238,926.87

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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.