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Finding the Fourth Proportional to 280,744,115.40, 421,116,173.10 and 280,744,115.40

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Solution

The fourth proportional to 280,744,115.40, 421,116,173.10 and 280,744,115.40 is: 421,116,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,744,115.40 : 421,116,173.10 = 280,744,115.40 : x
  2. Step 2: Convert to fraction form
    280,744,115.40/421,116,173.10 = 280,744,115.40/x
  3. Step 3: Cross multiply
    280,744,115.40x = 421,116,173.10 × 280,744,115.40
  4. Step 4: Simplify right side
    280,744,115.40x = 118,225,887,497,592,768
  5. Step 5: Solve for x
    x = 118,225,887,497,592,768/280,744,115.40
  6. Step 6: Final answer
    x = 421,116,173.10

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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.