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Finding the Fourth Proportional to 478,530.95, 717,899.40 and 238,773.79

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Solution

The fourth proportional to 478,530.95, 717,899.40 and 238,773.79 is: 358,212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,530.95 : 717,899.40 = 238,773.79 : x
  2. Step 2: Convert to fraction form
    478,530.95/717,899.40 = 238,773.79/x
  3. Step 3: Cross multiply
    478,530.95x = 717,899.40 × 238,773.79
  4. Step 4: Simplify right side
    478,530.95x = 171,415,558,781.98
  5. Step 5: Solve for x
    x = 171,415,558,781.98/478,530.95
  6. Step 6: Final answer
    x = 358,212.06

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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.