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Finding the Fourth Proportional to 280,979, 421,381.02 and 93,946.76

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Solution

The fourth proportional to 280,979, 421,381.02 and 93,946.76 is: 140,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,979 : 421,381.02 = 93,946.76 : x
  2. Step 2: Convert to fraction form
    280,979/421,381.02 = 93,946.76/x
  3. Step 3: Cross multiply
    280,979x = 421,381.02 × 93,946.76
  4. Step 4: Simplify right side
    280,979x = 39,587,381,554.50
  5. Step 5: Solve for x
    x = 39,587,381,554.50/280,979
  6. Step 6: Final answer
    x = 140,890.89

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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.