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Finding the Fourth Proportional to 265,501.80, 398,252.70 and 99,268.20

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Solution

The fourth proportional to 265,501.80, 398,252.70 and 99,268.20 is: 148,902.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,501.80 : 398,252.70 = 99,268.20 : x
  2. Step 2: Convert to fraction form
    265,501.80/398,252.70 = 99,268.20/x
  3. Step 3: Cross multiply
    265,501.80x = 398,252.70 × 99,268.20
  4. Step 4: Simplify right side
    265,501.80x = 39,533,828,674.14
  5. Step 5: Solve for x
    x = 39,533,828,674.14/265,501.80
  6. Step 6: Final answer
    x = 148,902.30

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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.