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Finding the Fourth Proportional to 492,258, 679,316.40 and 265,903.50

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Solution

The fourth proportional to 492,258, 679,316.40 and 265,903.50 is: 366,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,258 : 679,316.40 = 265,903.50 : x
  2. Step 2: Convert to fraction form
    492,258/679,316.40 = 265,903.50/x
  3. Step 3: Cross multiply
    492,258x = 679,316.40 × 265,903.50
  4. Step 4: Simplify right side
    492,258x = 180,632,608,367.40
  5. Step 5: Solve for x
    x = 180,632,608,367.40/492,258
  6. Step 6: Final answer
    x = 366,947.02

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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.