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Finding the Fourth Proportional to 309,320.66, 463,925.36 and 140,801.78

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Solution

The fourth proportional to 309,320.66, 463,925.36 and 140,801.78 is: 211,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,320.66 : 463,925.36 = 140,801.78 : x
  2. Step 2: Convert to fraction form
    309,320.66/463,925.36 = 140,801.78/x
  3. Step 3: Cross multiply
    309,320.66x = 463,925.36 × 140,801.78
  4. Step 4: Simplify right side
    309,320.66x = 65,321,513,451.51
  5. Step 5: Solve for x
    x = 65,321,513,451.51/309,320.66
  6. Step 6: Final answer
    x = 211,177.34

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1.5x scale

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.