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Finding the Fourth Proportional to 342,565.22, 472,700.55 and 197,392.16

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Solution

The fourth proportional to 342,565.22, 472,700.55 and 197,392.16 is: 272,378.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,565.22 : 472,700.55 = 197,392.16 : x
  2. Step 2: Convert to fraction form
    342,565.22/472,700.55 = 197,392.16/x
  3. Step 3: Cross multiply
    342,565.22x = 472,700.55 × 197,392.16
  4. Step 4: Simplify right side
    342,565.22x = 93,307,382,597.69
  5. Step 5: Solve for x
    x = 93,307,382,597.69/342,565.22
  6. Step 6: Final answer
    x = 272,378.45

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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.