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Finding the Fourth Proportional to 340,143.90, 469,386.82 and 187,167.79

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Solution

The fourth proportional to 340,143.90, 469,386.82 and 187,167.79 is: 258,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,143.90 : 469,386.82 = 187,167.79 : x
  2. Step 2: Convert to fraction form
    340,143.90/469,386.82 = 187,167.79/x
  3. Step 3: Cross multiply
    340,143.90x = 469,386.82 × 187,167.79
  4. Step 4: Simplify right side
    340,143.90x = 87,854,093,754.53
  5. Step 5: Solve for x
    x = 87,854,093,754.53/340,143.90
  6. Step 6: Final answer
    x = 258,285.08

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1.5x scale

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.