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Finding the Fourth Proportional to 458,623.95, 687,903.53 and 159,031.95

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Solution

The fourth proportional to 458,623.95, 687,903.53 and 159,031.95 is: 238,536.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,623.95 : 687,903.53 = 159,031.95 : x
  2. Step 2: Convert to fraction form
    458,623.95/687,903.53 = 159,031.95/x
  3. Step 3: Cross multiply
    458,623.95x = 687,903.53 × 159,031.95
  4. Step 4: Simplify right side
    458,623.95x = 109,398,638,992.62
  5. Step 5: Solve for x
    x = 109,398,638,992.62/458,623.95
  6. Step 6: Final answer
    x = 238,536.69

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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.