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Finding the Fourth Proportional to 478,298.62, 717,418.77 and 197,808.58

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Solution

The fourth proportional to 478,298.62, 717,418.77 and 197,808.58 is: 296,700.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,298.62 : 717,418.77 = 197,808.58 : x
  2. Step 2: Convert to fraction form
    478,298.62/717,418.77 = 197,808.58/x
  3. Step 3: Cross multiply
    478,298.62x = 717,418.77 × 197,808.58
  4. Step 4: Simplify right side
    478,298.62x = 141,911,588,159.05
  5. Step 5: Solve for x
    x = 141,911,588,159.05/478,298.62
  6. Step 6: Final answer
    x = 296,700.81

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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.