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Finding the Fourth Proportional to 358,100.80, 536,276.40 and 268,871.20

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Solution

The fourth proportional to 358,100.80, 536,276.40 and 268,871.20 is: 402,649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,100.80 : 536,276.40 = 268,871.20 : x
  2. Step 2: Convert to fraction form
    358,100.80/536,276.40 = 268,871.20/x
  3. Step 3: Cross multiply
    358,100.80x = 536,276.40 × 268,871.20
  4. Step 4: Simplify right side
    358,100.80x = 144,189,279,199.68
  5. Step 5: Solve for x
    x = 144,189,279,199.68/358,100.80
  6. Step 6: Final answer
    x = 402,649.98

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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.