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Finding the Fourth Proportional to 291,661.40, 437,492.10 and 266,729.60

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Solution

The fourth proportional to 291,661.40, 437,492.10 and 266,729.60 is: 400,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,661.40 : 437,492.10 = 266,729.60 : x
  2. Step 2: Convert to fraction form
    291,661.40/437,492.10 = 266,729.60/x
  3. Step 3: Cross multiply
    291,661.40x = 437,492.10 × 266,729.60
  4. Step 4: Simplify right side
    291,661.40x = 116,692,092,836.16
  5. Step 5: Solve for x
    x = 116,692,092,836.16/291,661.40
  6. Step 6: Final answer
    x = 400,094.40

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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.