Home / 280,861,431.40-421,293,459.30-99,108,609.40

Finding the Fourth Proportional to 280,861,431.40, 421,293,459.30 and 99,108,609.40

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Solution

The fourth proportional to 280,861,431.40, 421,293,459.30 and 99,108,609.40 is: 148,663,377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,861,431.40 : 421,293,459.30 = 99,108,609.40 : x
  2. Step 2: Convert to fraction form
    280,861,431.40/421,293,459.30 = 99,108,609.40/x
  3. Step 3: Cross multiply
    280,861,431.40x = 421,293,459.30 × 99,108,609.40
  4. Step 4: Simplify right side
    280,861,431.40x = 41,753,808,900,538,504
  5. Step 5: Solve for x
    x = 41,753,808,900,538,504/280,861,431.40
  6. Step 6: Final answer
    x = 148,663,377.14

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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.