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Finding the Fourth Proportional to 448,128.40, 672,176.40 and 181,881.40

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Solution

The fourth proportional to 448,128.40, 672,176.40 and 181,881.40 is: 272,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,128.40 : 672,176.40 = 181,881.40 : x
  2. Step 2: Convert to fraction form
    448,128.40/672,176.40 = 181,881.40/x
  3. Step 3: Cross multiply
    448,128.40x = 672,176.40 × 181,881.40
  4. Step 4: Simplify right side
    448,128.40x = 122,256,384,678.96
  5. Step 5: Solve for x
    x = 122,256,384,678.96/448,128.40
  6. Step 6: Final answer
    x = 272,815.52

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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.