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Finding the Fourth Proportional to 280,562.40, 421,880.40 and 234,943.20

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Solution

The fourth proportional to 280,562.40, 421,880.40 and 234,943.20 is: 353,283.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,562.40 : 421,880.40 = 234,943.20 : x
  2. Step 2: Convert to fraction form
    280,562.40/421,880.40 = 234,943.20/x
  3. Step 3: Cross multiply
    280,562.40x = 421,880.40 × 234,943.20
  4. Step 4: Simplify right side
    280,562.40x = 99,117,931,193.28
  5. Step 5: Solve for x
    x = 99,117,931,193.28/280,562.40
  6. Step 6: Final answer
    x = 353,283.02

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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.