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Finding the Fourth Proportional to 478,852.78, 718,279.17 and 163,312.42

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Solution

The fourth proportional to 478,852.78, 718,279.17 and 163,312.42 is: 244,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,852.78 : 718,279.17 = 163,312.42 : x
  2. Step 2: Convert to fraction form
    478,852.78/718,279.17 = 163,312.42/x
  3. Step 3: Cross multiply
    478,852.78x = 718,279.17 × 163,312.42
  4. Step 4: Simplify right side
    478,852.78x = 117,303,909,488.29
  5. Step 5: Solve for x
    x = 117,303,909,488.29/478,852.78
  6. Step 6: Final answer
    x = 244,968.63

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Similar ratio
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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.