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Finding the Fourth Proportional to 318,874.95, 478,364 and 94,257.90

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Solution

The fourth proportional to 318,874.95, 478,364 and 94,257.90 is: 141,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,874.95 : 478,364 = 94,257.90 : x
  2. Step 2: Convert to fraction form
    318,874.95/478,364 = 94,257.90/x
  3. Step 3: Cross multiply
    318,874.95x = 478,364 × 94,257.90
  4. Step 4: Simplify right side
    318,874.95x = 45,089,586,075.60
  5. Step 5: Solve for x
    x = 45,089,586,075.60/318,874.95
  6. Step 6: Final answer
    x = 141,402.10

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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.