Home / 478,911.40-718,464.30-163,400.20

Finding the Fourth Proportional to 478,911.40, 718,464.30 and 163,400.20

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Solution

The fourth proportional to 478,911.40, 718,464.30 and 163,400.20 is: 245,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,911.40 : 718,464.30 = 163,400.20 : x
  2. Step 2: Convert to fraction form
    478,911.40/718,464.30 = 163,400.20/x
  3. Step 3: Cross multiply
    478,911.40x = 718,464.30 × 163,400.20
  4. Step 4: Simplify right side
    478,911.40x = 117,397,210,312.86
  5. Step 5: Solve for x
    x = 117,397,210,312.86/478,911.40
  6. Step 6: Final answer
    x = 245,133.46

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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.