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Finding the Fourth Proportional to 608,910.40, 913,423.20 and 165,678.40

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Solution

The fourth proportional to 608,910.40, 913,423.20 and 165,678.40 is: 248,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,910.40 : 913,423.20 = 165,678.40 : x
  2. Step 2: Convert to fraction form
    608,910.40/913,423.20 = 165,678.40/x
  3. Step 3: Cross multiply
    608,910.40x = 913,423.20 × 165,678.40
  4. Step 4: Simplify right side
    608,910.40x = 151,334,494,298.88
  5. Step 5: Solve for x
    x = 151,334,494,298.88/608,910.40
  6. Step 6: Final answer
    x = 248,533.27

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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.