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Finding the Fourth Proportional to 478,987.16, 718,554.54 and 163,370.32

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Solution

The fourth proportional to 478,987.16, 718,554.54 and 163,370.32 is: 245,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987.16 : 718,554.54 = 163,370.32 : x
  2. Step 2: Convert to fraction form
    478,987.16/718,554.54 = 163,370.32/x
  3. Step 3: Cross multiply
    478,987.16x = 718,554.54 × 163,370.32
  4. Step 4: Simplify right side
    478,987.16x = 117,390,485,137.25
  5. Step 5: Solve for x
    x = 117,390,485,137.25/478,987.16
  6. Step 6: Final answer
    x = 245,080.65

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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.