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Finding the Fourth Proportional to 472,790.55, 709,190.66 and 135,830.35

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Solution

The fourth proportional to 472,790.55, 709,190.66 and 135,830.35 is: 203,746.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,790.55 : 709,190.66 = 135,830.35 : x
  2. Step 2: Convert to fraction form
    472,790.55/709,190.66 = 135,830.35/x
  3. Step 3: Cross multiply
    472,790.55x = 709,190.66 × 135,830.35
  4. Step 4: Simplify right side
    472,790.55x = 96,329,615,564.53
  5. Step 5: Solve for x
    x = 96,329,615,564.53/472,790.55
  6. Step 6: Final answer
    x = 203,746.91

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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.