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Finding the Fourth Proportional to 368,384.63, 508,184.70 and 215,322.83

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Solution

The fourth proportional to 368,384.63, 508,184.70 and 215,322.83 is: 297,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,384.63 : 508,184.70 = 215,322.83 : x
  2. Step 2: Convert to fraction form
    368,384.63/508,184.70 = 215,322.83/x
  3. Step 3: Cross multiply
    368,384.63x = 508,184.70 × 215,322.83
  4. Step 4: Simplify right side
    368,384.63x = 109,423,767,766.70
  5. Step 5: Solve for x
    x = 109,423,767,766.70/368,384.63
  6. Step 6: Final answer
    x = 297,036.74

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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.