Home / 521,239.83-719,275.73-288,650.05

Finding the Fourth Proportional to 521,239.83, 719,275.73 and 288,650.05

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Solution

The fourth proportional to 521,239.83, 719,275.73 and 288,650.05 is: 398,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,239.83 : 719,275.73 = 288,650.05 : x
  2. Step 2: Convert to fraction form
    521,239.83/719,275.73 = 288,650.05/x
  3. Step 3: Cross multiply
    521,239.83x = 719,275.73 × 288,650.05
  4. Step 4: Simplify right side
    521,239.83x = 207,618,972,186.85
  5. Step 5: Solve for x
    x = 207,618,972,186.85/521,239.83
  6. Step 6: Final answer
    x = 398,317.55

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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.