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Finding the Fourth Proportional to 389,279.04, 583,889.40 and 108,818.16

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Solution

The fourth proportional to 389,279.04, 583,889.40 and 108,818.16 is: 163,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,279.04 : 583,889.40 = 108,818.16 : x
  2. Step 2: Convert to fraction form
    389,279.04/583,889.40 = 108,818.16/x
  3. Step 3: Cross multiply
    389,279.04x = 583,889.40 × 108,818.16
  4. Step 4: Simplify right side
    389,279.04x = 63,537,770,151.50
  5. Step 5: Solve for x
    x = 63,537,770,151.50/389,279.04
  6. Step 6: Final answer
    x = 163,219.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.