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Finding the Fourth Proportional to 478,399.08, 717,598.62 and 197,607.72

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Solution

The fourth proportional to 478,399.08, 717,598.62 and 197,607.72 is: 296,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,399.08 : 717,598.62 = 197,607.72 : x
  2. Step 2: Convert to fraction form
    478,399.08/717,598.62 = 197,607.72/x
  3. Step 3: Cross multiply
    478,399.08x = 717,598.62 × 197,607.72
  4. Step 4: Simplify right side
    478,399.08x = 141,803,027,173.35
  5. Step 5: Solve for x
    x = 141,803,027,173.35/478,399.08
  6. Step 6: Final answer
    x = 296,411.58

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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.