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Finding the Fourth Proportional to 394,850, 592,336.56 and 128,547.66

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Solution

The fourth proportional to 394,850, 592,336.56 and 128,547.66 is: 192,841.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,850 : 592,336.56 = 128,547.66 : x
  2. Step 2: Convert to fraction form
    394,850/592,336.56 = 128,547.66/x
  3. Step 3: Cross multiply
    394,850x = 592,336.56 × 128,547.66
  4. Step 4: Simplify right side
    394,850x = 76,143,478,720.45
  5. Step 5: Solve for x
    x = 76,143,478,720.45/394,850
  6. Step 6: Final answer
    x = 192,841.53

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1.5x scale

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.