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Finding the Fourth Proportional to 478,297.98, 717,548.18 and 158,431.75

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Solution

The fourth proportional to 478,297.98, 717,548.18 and 158,431.75 is: 237,681.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,297.98 : 717,548.18 = 158,431.75 : x
  2. Step 2: Convert to fraction form
    478,297.98/717,548.18 = 158,431.75/x
  3. Step 3: Cross multiply
    478,297.98x = 717,548.18 × 158,431.75
  4. Step 4: Simplify right side
    478,297.98x = 113,682,411,280.69
  5. Step 5: Solve for x
    x = 113,682,411,280.69/478,297.98
  6. Step 6: Final answer
    x = 237,681.14

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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.