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Finding the Fourth Proportional to 268,475.02, 402,461.02 and 90,857.68

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Solution

The fourth proportional to 268,475.02, 402,461.02 and 90,857.68 is: 136,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,475.02 : 402,461.02 = 90,857.68 : x
  2. Step 2: Convert to fraction form
    268,475.02/402,461.02 = 90,857.68/x
  3. Step 3: Cross multiply
    268,475.02x = 402,461.02 × 90,857.68
  4. Step 4: Simplify right side
    268,475.02x = 36,566,674,567.63
  5. Step 5: Solve for x
    x = 36,566,674,567.63/268,475.02
  6. Step 6: Final answer
    x = 136,201.40

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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.