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Finding the Fourth Proportional to 509,605.17, 703,237.22 and 280,160.79

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Solution

The fourth proportional to 509,605.17, 703,237.22 and 280,160.79 is: 386,612.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,605.17 : 703,237.22 = 280,160.79 : x
  2. Step 2: Convert to fraction form
    509,605.17/703,237.22 = 280,160.79/x
  3. Step 3: Cross multiply
    509,605.17x = 703,237.22 × 280,160.79
  4. Step 4: Simplify right side
    509,605.17x = 197,019,492,434.80
  5. Step 5: Solve for x
    x = 197,019,492,434.80/509,605.17
  6. Step 6: Final answer
    x = 386,612.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.