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Finding the Fourth Proportional to 490,127.60, 734,899.80 and 253,931.60

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Solution

The fourth proportional to 490,127.60, 734,899.80 and 253,931.60 is: 380,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,127.60 : 734,899.80 = 253,931.60 : x
  2. Step 2: Convert to fraction form
    490,127.60/734,899.80 = 253,931.60/x
  3. Step 3: Cross multiply
    490,127.60x = 734,899.80 × 253,931.60
  4. Step 4: Simplify right side
    490,127.60x = 186,614,282,053.68
  5. Step 5: Solve for x
    x = 186,614,282,053.68/490,127.60
  6. Step 6: Final answer
    x = 380,746.32

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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.