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Finding the Fourth Proportional to 319,611.60, 480,130.20 and 267,123.60

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Solution

The fourth proportional to 319,611.60, 480,130.20 and 267,123.60 is: 401,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,611.60 : 480,130.20 = 267,123.60 : x
  2. Step 2: Convert to fraction form
    319,611.60/480,130.20 = 267,123.60/x
  3. Step 3: Cross multiply
    319,611.60x = 480,130.20 × 267,123.60
  4. Step 4: Simplify right side
    319,611.60x = 128,254,107,492.72
  5. Step 5: Solve for x
    x = 128,254,107,492.72/319,611.60
  6. Step 6: Final answer
    x = 401,281.14

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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.