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Finding the Fourth Proportional to 265,320.20, 397,980.30 and 181,339.40

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Solution

The fourth proportional to 265,320.20, 397,980.30 and 181,339.40 is: 272,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,320.20 : 397,980.30 = 181,339.40 : x
  2. Step 2: Convert to fraction form
    265,320.20/397,980.30 = 181,339.40/x
  3. Step 3: Cross multiply
    265,320.20x = 397,980.30 × 181,339.40
  4. Step 4: Simplify right side
    265,320.20x = 72,169,508,813.82
  5. Step 5: Solve for x
    x = 72,169,508,813.82/265,320.20
  6. Step 6: Final answer
    x = 272,009.10

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1.5x scale

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.