Home / 478,743.06-718,278.63-163,421.40

Finding the Fourth Proportional to 478,743.06, 718,278.63 and 163,421.40

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Solution

The fourth proportional to 478,743.06, 718,278.63 and 163,421.40 is: 245,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,743.06 : 718,278.63 = 163,421.40 : x
  2. Step 2: Convert to fraction form
    478,743.06/718,278.63 = 163,421.40/x
  3. Step 3: Cross multiply
    478,743.06x = 718,278.63 × 163,421.40
  4. Step 4: Simplify right side
    478,743.06x = 117,382,099,304.68
  5. Step 5: Solve for x
    x = 117,382,099,304.68/478,743.06
  6. Step 6: Final answer
    x = 245,188.10

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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.