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Finding the Fourth Proportional to 340,389.32, 469,733.40 and 187,424.33

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Solution

The fourth proportional to 340,389.32, 469,733.40 and 187,424.33 is: 258,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,389.32 : 469,733.40 = 187,424.33 : x
  2. Step 2: Convert to fraction form
    340,389.32/469,733.40 = 187,424.33/x
  3. Step 3: Cross multiply
    340,389.32x = 469,733.40 × 187,424.33
  4. Step 4: Simplify right side
    340,389.32x = 88,039,465,424.96
  5. Step 5: Solve for x
    x = 88,039,465,424.96/340,389.32
  6. Step 6: Final answer
    x = 258,643.45

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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.