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Finding the Fourth Proportional to 280,084.80, 420,127.20 and 93,096.30

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Solution

The fourth proportional to 280,084.80, 420,127.20 and 93,096.30 is: 139,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,084.80 : 420,127.20 = 93,096.30 : x
  2. Step 2: Convert to fraction form
    280,084.80/420,127.20 = 93,096.30/x
  3. Step 3: Cross multiply
    280,084.80x = 420,127.20 × 93,096.30
  4. Step 4: Simplify right side
    280,084.80x = 39,112,287,849.36
  5. Step 5: Solve for x
    x = 39,112,287,849.36/280,084.80
  6. Step 6: Final answer
    x = 139,644.45

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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.