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Finding the Fourth Proportional to 356,697, 534,668.40 and 131,913.18

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Solution

The fourth proportional to 356,697, 534,668.40 and 131,913.18 is: 197,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,697 : 534,668.40 = 131,913.18 : x
  2. Step 2: Convert to fraction form
    356,697/534,668.40 = 131,913.18/x
  3. Step 3: Cross multiply
    356,697x = 534,668.40 × 131,913.18
  4. Step 4: Simplify right side
    356,697x = 70,529,808,889.51
  5. Step 5: Solve for x
    x = 70,529,808,889.51/356,697
  6. Step 6: Final answer
    x = 197,730.31

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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.