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Finding the Fourth Proportional to 478,398.08, 717,597.12 and 197,606.72

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Solution

The fourth proportional to 478,398.08, 717,597.12 and 197,606.72 is: 296,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,398.08 : 717,597.12 = 197,606.72 : x
  2. Step 2: Convert to fraction form
    478,398.08/717,597.12 = 197,606.72/x
  3. Step 3: Cross multiply
    478,398.08x = 717,597.12 × 197,606.72
  4. Step 4: Simplify right side
    478,398.08x = 141,802,013,164.65
  5. Step 5: Solve for x
    x = 141,802,013,164.65/478,398.08
  6. Step 6: Final answer
    x = 296,410.08

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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.