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Finding the Fourth Proportional to 342,345, 513,391.56 and 117,641.64

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Solution

The fourth proportional to 342,345, 513,391.56 and 117,641.64 is: 176,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,345 : 513,391.56 = 117,641.64 : x
  2. Step 2: Convert to fraction form
    342,345/513,391.56 = 117,641.64/x
  3. Step 3: Cross multiply
    342,345x = 513,391.56 × 117,641.64
  4. Step 4: Simplify right side
    342,345x = 60,396,225,080.56
  5. Step 5: Solve for x
    x = 60,396,225,080.56/342,345
  6. Step 6: Final answer
    x = 176,419.18

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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.