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Finding the Fourth Proportional to 478,783.36, 718,193.20 and 179,232.40

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Solution

The fourth proportional to 478,783.36, 718,193.20 and 179,232.40 is: 268,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,783.36 : 718,193.20 = 179,232.40 : x
  2. Step 2: Convert to fraction form
    478,783.36/718,193.20 = 179,232.40/x
  3. Step 3: Cross multiply
    478,783.36x = 718,193.20 × 179,232.40
  4. Step 4: Simplify right side
    478,783.36x = 128,723,490,899.68
  5. Step 5: Solve for x
    x = 128,723,490,899.68/478,783.36
  6. Step 6: Final answer
    x = 268,855.40

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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.