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Finding the Fourth Proportional to 448,130.80, 672,001.80 and 148,495.60

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Solution

The fourth proportional to 448,130.80, 672,001.80 and 148,495.60 is: 222,678.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,130.80 : 672,001.80 = 148,495.60 : x
  2. Step 2: Convert to fraction form
    448,130.80/672,001.80 = 148,495.60/x
  3. Step 3: Cross multiply
    448,130.80x = 672,001.80 × 148,495.60
  4. Step 4: Simplify right side
    448,130.80x = 99,789,310,492.08
  5. Step 5: Solve for x
    x = 99,789,310,492.08/448,130.80
  6. Step 6: Final answer
    x = 222,678.98

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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.