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Finding the Fourth Proportional to 218,707.57, 328,061.36 and 52,495.57

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Solution

The fourth proportional to 218,707.57, 328,061.36 and 52,495.57 is: 78,743.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,707.57 : 328,061.36 = 52,495.57 : x
  2. Step 2: Convert to fraction form
    218,707.57/328,061.36 = 52,495.57/x
  3. Step 3: Cross multiply
    218,707.57x = 328,061.36 × 52,495.57
  4. Step 4: Simplify right side
    218,707.57x = 17,221,767,399.26
  5. Step 5: Solve for x
    x = 17,221,767,399.26/218,707.57
  6. Step 6: Final answer
    x = 78,743.35

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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.