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Finding the Fourth Proportional to 260,384.45, 390,573.86 and 197,590.22

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Solution

The fourth proportional to 260,384.45, 390,573.86 and 197,590.22 is: 296,383.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,384.45 : 390,573.86 = 197,590.22 : x
  2. Step 2: Convert to fraction form
    260,384.45/390,573.86 = 197,590.22/x
  3. Step 3: Cross multiply
    260,384.45x = 390,573.86 × 197,590.22
  4. Step 4: Simplify right side
    260,384.45x = 77,173,574,923.65
  5. Step 5: Solve for x
    x = 77,173,574,923.65/260,384.45
  6. Step 6: Final answer
    x = 296,383.19

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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.