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Finding the Fourth Proportional to 289,425.48, 399,419.48 and 168,547.28

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Solution

The fourth proportional to 289,425.48, 399,419.48 and 168,547.28 is: 232,602.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,425.48 : 399,419.48 = 168,547.28 : x
  2. Step 2: Convert to fraction form
    289,425.48/399,419.48 = 168,547.28/x
  3. Step 3: Cross multiply
    289,425.48x = 399,419.48 × 168,547.28
  4. Step 4: Simplify right side
    289,425.48x = 67,321,066,933.01
  5. Step 5: Solve for x
    x = 67,321,066,933.01/289,425.48
  6. Step 6: Final answer
    x = 232,602.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.