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Finding the Fourth Proportional to 385,503.48, 578,251.72 and 301,334.40

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Solution

The fourth proportional to 385,503.48, 578,251.72 and 301,334.40 is: 451,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,503.48 : 578,251.72 = 301,334.40 : x
  2. Step 2: Convert to fraction form
    385,503.48/578,251.72 = 301,334.40/x
  3. Step 3: Cross multiply
    385,503.48x = 578,251.72 × 301,334.40
  4. Step 4: Simplify right side
    385,503.48x = 174,247,135,095.17
  5. Step 5: Solve for x
    x = 174,247,135,095.17/385,503.48
  6. Step 6: Final answer
    x = 451,998.86

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1.5x scale

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.