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Finding the Fourth Proportional to 506,986.60, 760,479.90 and 133,047.40

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Solution

The fourth proportional to 506,986.60, 760,479.90 and 133,047.40 is: 199,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,986.60 : 760,479.90 = 133,047.40 : x
  2. Step 2: Convert to fraction form
    506,986.60/760,479.90 = 133,047.40/x
  3. Step 3: Cross multiply
    506,986.60x = 760,479.90 × 133,047.40
  4. Step 4: Simplify right side
    506,986.60x = 101,179,873,447.26
  5. Step 5: Solve for x
    x = 101,179,873,447.26/506,986.60
  6. Step 6: Final answer
    x = 199,571.10

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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.