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Finding the Fourth Proportional to 318,957.12, 478,522.80 and 94,328.64

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Solution

The fourth proportional to 318,957.12, 478,522.80 and 94,328.64 is: 141,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,957.12 : 478,522.80 = 94,328.64 : x
  2. Step 2: Convert to fraction form
    318,957.12/478,522.80 = 94,328.64/x
  3. Step 3: Cross multiply
    318,957.12x = 478,522.80 × 94,328.64
  4. Step 4: Simplify right side
    318,957.12x = 45,138,404,932.99
  5. Step 5: Solve for x
    x = 45,138,404,932.99/318,957.12
  6. Step 6: Final answer
    x = 141,518.72

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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.