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Finding the Fourth Proportional to 291,994.80, 438,006.60 and 152,026.80

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Solution

The fourth proportional to 291,994.80, 438,006.60 and 152,026.80 is: 228,047.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,994.80 : 438,006.60 = 152,026.80 : x
  2. Step 2: Convert to fraction form
    291,994.80/438,006.60 = 152,026.80/x
  3. Step 3: Cross multiply
    291,994.80x = 438,006.60 × 152,026.80
  4. Step 4: Simplify right side
    291,994.80x = 66,588,741,776.88
  5. Step 5: Solve for x
    x = 66,588,741,776.88/291,994.80
  6. Step 6: Final answer
    x = 228,047.70

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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.