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Finding the Fourth Proportional to 300,146.72, 450,258.01 and 138,001.93

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Solution

The fourth proportional to 300,146.72, 450,258.01 and 138,001.93 is: 207,020.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,146.72 : 450,258.01 = 138,001.93 : x
  2. Step 2: Convert to fraction form
    300,146.72/450,258.01 = 138,001.93/x
  3. Step 3: Cross multiply
    300,146.72x = 450,258.01 × 138,001.93
  4. Step 4: Simplify right side
    300,146.72x = 62,136,472,907.31
  5. Step 5: Solve for x
    x = 62,136,472,907.31/300,146.72
  6. Step 6: Final answer
    x = 207,020.33

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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.