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Finding the Fourth Proportional to 281,089.92, 387,903.96 and 153,765.48

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Solution

The fourth proportional to 281,089.92, 387,903.96 and 153,765.48 is: 212,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,089.92 : 387,903.96 = 153,765.48 : x
  2. Step 2: Convert to fraction form
    281,089.92/387,903.96 = 153,765.48/x
  3. Step 3: Cross multiply
    281,089.92x = 387,903.96 × 153,765.48
  4. Step 4: Simplify right side
    281,089.92x = 59,646,238,603.30
  5. Step 5: Solve for x
    x = 59,646,238,603.30/281,089.92
  6. Step 6: Final answer
    x = 212,196.29

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1.5x scale

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.