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Finding the Fourth Proportional to 268,415.79, 402,373.40 and 90,799.26

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Solution

The fourth proportional to 268,415.79, 402,373.40 and 90,799.26 is: 136,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,415.79 : 402,373.40 = 90,799.26 : x
  2. Step 2: Convert to fraction form
    268,415.79/402,373.40 = 90,799.26/x
  3. Step 3: Cross multiply
    268,415.79x = 402,373.40 × 90,799.26
  4. Step 4: Simplify right side
    268,415.79x = 36,535,206,509.69
  5. Step 5: Solve for x
    x = 36,535,206,509.69/268,415.79
  6. Step 6: Final answer
    x = 136,114.22

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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.