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Finding the Fourth Proportional to 369,539.60, 554,309.40 and 280,966.10

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Solution

The fourth proportional to 369,539.60, 554,309.40 and 280,966.10 is: 421,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,539.60 : 554,309.40 = 280,966.10 : x
  2. Step 2: Convert to fraction form
    369,539.60/554,309.40 = 280,966.10/x
  3. Step 3: Cross multiply
    369,539.60x = 554,309.40 × 280,966.10
  4. Step 4: Simplify right side
    369,539.60x = 155,742,150,311.34
  5. Step 5: Solve for x
    x = 155,742,150,311.34/369,539.60
  6. Step 6: Final answer
    x = 421,449.15

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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.