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Finding the Fourth Proportional to 342,720, 472,953.60 and 191,818.08

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Solution

The fourth proportional to 342,720, 472,953.60 and 191,818.08 is: 264,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,720 : 472,953.60 = 191,818.08 : x
  2. Step 2: Convert to fraction form
    342,720/472,953.60 = 191,818.08/x
  3. Step 3: Cross multiply
    342,720x = 472,953.60 × 191,818.08
  4. Step 4: Simplify right side
    342,720x = 90,721,051,481.09
  5. Step 5: Solve for x
    x = 90,721,051,481.09/342,720
  6. Step 6: Final answer
    x = 264,708.95

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1.5x scale

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.