Home / 395,139.68-592,771.04-128,838.40

Finding the Fourth Proportional to 395,139.68, 592,771.04 and 128,838.40

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Solution

The fourth proportional to 395,139.68, 592,771.04 and 128,838.40 is: 193,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,139.68 : 592,771.04 = 128,838.40 : x
  2. Step 2: Convert to fraction form
    395,139.68/592,771.04 = 128,838.40/x
  3. Step 3: Cross multiply
    395,139.68x = 592,771.04 × 128,838.40
  4. Step 4: Simplify right side
    395,139.68x = 76,371,672,359.94
  5. Step 5: Solve for x
    x = 76,371,672,359.94/395,139.68
  6. Step 6: Final answer
    x = 193,277.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.