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Finding the Fourth Proportional to 291,039.40, 401,657.70 and 163,707.40

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Solution

The fourth proportional to 291,039.40, 401,657.70 and 163,707.40 is: 225,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,039.40 : 401,657.70 = 163,707.40 : x
  2. Step 2: Convert to fraction form
    291,039.40/401,657.70 = 163,707.40/x
  3. Step 3: Cross multiply
    291,039.40x = 401,657.70 × 163,707.40
  4. Step 4: Simplify right side
    291,039.40x = 65,754,337,756.98
  5. Step 5: Solve for x
    x = 65,754,337,756.98/291,039.40
  6. Step 6: Final answer
    x = 225,929.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.