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Finding the Fourth Proportional to 342,467.80, 513,701.70 and 155,479.30

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Solution

The fourth proportional to 342,467.80, 513,701.70 and 155,479.30 is: 233,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,467.80 : 513,701.70 = 155,479.30 : x
  2. Step 2: Convert to fraction form
    342,467.80/513,701.70 = 155,479.30/x
  3. Step 3: Cross multiply
    342,467.80x = 513,701.70 × 155,479.30
  4. Step 4: Simplify right side
    342,467.80x = 79,869,980,724.81
  5. Step 5: Solve for x
    x = 79,869,980,724.81/342,467.80
  6. Step 6: Final answer
    x = 233,218.95

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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.