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Finding the Fourth Proportional to 448,402.80, 672,457.86 and 148,802.91

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Solution

The fourth proportional to 448,402.80, 672,457.86 and 148,802.91 is: 223,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,402.80 : 672,457.86 = 148,802.91 : x
  2. Step 2: Convert to fraction form
    448,402.80/672,457.86 = 148,802.91/x
  3. Step 3: Cross multiply
    448,402.80x = 672,457.86 × 148,802.91
  4. Step 4: Simplify right side
    448,402.80x = 100,063,686,420.37
  5. Step 5: Solve for x
    x = 100,063,686,420.37/448,402.80
  6. Step 6: Final answer
    x = 223,155.80

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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.