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Finding the Fourth Proportional to 608,981.40, 913,529.70 and 165,749.40

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Solution

The fourth proportional to 608,981.40, 913,529.70 and 165,749.40 is: 248,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,981.40 : 913,529.70 = 165,749.40 : x
  2. Step 2: Convert to fraction form
    608,981.40/913,529.70 = 165,749.40/x
  3. Step 3: Cross multiply
    608,981.40x = 913,529.70 × 165,749.40
  4. Step 4: Simplify right side
    608,981.40x = 151,416,999,657.18
  5. Step 5: Solve for x
    x = 151,416,999,657.18/608,981.40
  6. Step 6: Final answer
    x = 248,639.78

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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.