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Finding the Fourth Proportional to 388,751.82, 583,088.31 and 104,405.42

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Solution

The fourth proportional to 388,751.82, 583,088.31 and 104,405.42 is: 156,597.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,751.82 : 583,088.31 = 104,405.42 : x
  2. Step 2: Convert to fraction form
    388,751.82/583,088.31 = 104,405.42/x
  3. Step 3: Cross multiply
    388,751.82x = 583,088.31 × 104,405.42
  4. Step 4: Simplify right side
    388,751.82x = 60,877,581,360.36
  5. Step 5: Solve for x
    x = 60,877,581,360.36/388,751.82
  6. Step 6: Final answer
    x = 156,597.55

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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.