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Finding the Fourth Proportional to 646,379.15, 970,011.59 and 225,655.01

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Solution

The fourth proportional to 646,379.15, 970,011.59 and 225,655.01 is: 338,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,379.15 : 970,011.59 = 225,655.01 : x
  2. Step 2: Convert to fraction form
    646,379.15/970,011.59 = 225,655.01/x
  3. Step 3: Cross multiply
    646,379.15x = 970,011.59 × 225,655.01
  4. Step 4: Simplify right side
    646,379.15x = 218,887,975,041.57
  5. Step 5: Solve for x
    x = 218,887,975,041.57/646,379.15
  6. Step 6: Final answer
    x = 338,637.12

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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.