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Finding the Fourth Proportional to 235,455.80, 324,924.41 and 128,024.89

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Solution

The fourth proportional to 235,455.80, 324,924.41 and 128,024.89 is: 176,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,455.80 : 324,924.41 = 128,024.89 : x
  2. Step 2: Convert to fraction form
    235,455.80/324,924.41 = 128,024.89/x
  3. Step 3: Cross multiply
    235,455.80x = 324,924.41 × 128,024.89
  4. Step 4: Simplify right side
    235,455.80x = 41,598,411,356.32
  5. Step 5: Solve for x
    x = 41,598,411,356.32/235,455.80
  6. Step 6: Final answer
    x = 176,671.85

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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.