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Finding the Fourth Proportional to 340,390.83, 469,742.48 and 187,432.51

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Solution

The fourth proportional to 340,390.83, 469,742.48 and 187,432.51 is: 258,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,390.83 : 469,742.48 = 187,432.51 : x
  2. Step 2: Convert to fraction form
    340,390.83/469,742.48 = 187,432.51/x
  3. Step 3: Cross multiply
    340,390.83x = 469,742.48 × 187,432.51
  4. Step 4: Simplify right side
    340,390.83x = 88,045,011,153.51
  5. Step 5: Solve for x
    x = 88,045,011,153.51/340,390.83
  6. Step 6: Final answer
    x = 258,658.59

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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.