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Finding the Fourth Proportional to 340,806.48, 470,340.06 and 187,871.88

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Solution

The fourth proportional to 340,806.48, 470,340.06 and 187,871.88 is: 259,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,806.48 : 470,340.06 = 187,871.88 : x
  2. Step 2: Convert to fraction form
    340,806.48/470,340.06 = 187,871.88/x
  3. Step 3: Cross multiply
    340,806.48x = 470,340.06 × 187,871.88
  4. Step 4: Simplify right side
    340,806.48x = 88,363,671,311.51
  5. Step 5: Solve for x
    x = 88,363,671,311.51/340,806.48
  6. Step 6: Final answer
    x = 259,278.14

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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.