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Finding the Fourth Proportional to 318,840.48, 478,260.72 and 97,222.56

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Solution

The fourth proportional to 318,840.48, 478,260.72 and 97,222.56 is: 145,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,840.48 : 478,260.72 = 97,222.56 : x
  2. Step 2: Convert to fraction form
    318,840.48/478,260.72 = 97,222.56/x
  3. Step 3: Cross multiply
    318,840.48x = 478,260.72 × 97,222.56
  4. Step 4: Simplify right side
    318,840.48x = 46,497,731,545.84
  5. Step 5: Solve for x
    x = 46,497,731,545.84/318,840.48
  6. Step 6: Final answer
    x = 145,833.84

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1.5x scale

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.