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Finding the Fourth Proportional to 458,285.17, 687,263.72 and 158,685.30

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Solution

The fourth proportional to 458,285.17, 687,263.72 and 158,685.30 is: 237,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,285.17 : 687,263.72 = 158,685.30 : x
  2. Step 2: Convert to fraction form
    458,285.17/687,263.72 = 158,685.30/x
  3. Step 3: Cross multiply
    458,285.17x = 687,263.72 × 158,685.30
  4. Step 4: Simplify right side
    458,285.17x = 109,058,649,587.32
  5. Step 5: Solve for x
    x = 109,058,649,587.32/458,285.17
  6. Step 6: Final answer
    x = 237,971.15

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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.