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Finding the Fourth Proportional to 288,967.30, 433,278.15 and 148,999.30

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Solution

The fourth proportional to 288,967.30, 433,278.15 and 148,999.30 is: 223,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,967.30 : 433,278.15 = 148,999.30 : x
  2. Step 2: Convert to fraction form
    288,967.30/433,278.15 = 148,999.30/x
  3. Step 3: Cross multiply
    288,967.30x = 433,278.15 × 148,999.30
  4. Step 4: Simplify right side
    288,967.30x = 64,558,141,055.30
  5. Step 5: Solve for x
    x = 64,558,141,055.30/288,967.30
  6. Step 6: Final answer
    x = 223,409.85

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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.