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Finding the Fourth Proportional to 478,886.26, 718,332.98 and 212,575.18

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Solution

The fourth proportional to 478,886.26, 718,332.98 and 212,575.18 is: 318,864.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,886.26 : 718,332.98 = 212,575.18 : x
  2. Step 2: Convert to fraction form
    478,886.26/718,332.98 = 212,575.18/x
  3. Step 3: Cross multiply
    478,886.26x = 718,332.98 × 212,575.18
  4. Step 4: Simplify right side
    478,886.26x = 152,699,762,523.44
  5. Step 5: Solve for x
    x = 152,699,762,523.44/478,886.26
  6. Step 6: Final answer
    x = 318,864.36

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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.