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Finding the Fourth Proportional to 340,909.59, 470,458.53 and 187,953.87

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Solution

The fourth proportional to 340,909.59, 470,458.53 and 187,953.87 is: 259,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,909.59 : 470,458.53 = 187,953.87 : x
  2. Step 2: Convert to fraction form
    340,909.59/470,458.53 = 187,953.87/x
  3. Step 3: Cross multiply
    340,909.59x = 470,458.53 × 187,953.87
  4. Step 4: Simplify right side
    340,909.59x = 88,424,501,388.01
  5. Step 5: Solve for x
    x = 88,424,501,388.01/340,909.59
  6. Step 6: Final answer
    x = 259,378.16

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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.