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Finding the Fourth Proportional to 438,318.30, 657,477.45 and 267,076.20

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Solution

The fourth proportional to 438,318.30, 657,477.45 and 267,076.20 is: 400,614.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,318.30 : 657,477.45 = 267,076.20 : x
  2. Step 2: Convert to fraction form
    438,318.30/657,477.45 = 267,076.20/x
  3. Step 3: Cross multiply
    438,318.30x = 657,477.45 × 267,076.20
  4. Step 4: Simplify right side
    438,318.30x = 175,596,578,931.69
  5. Step 5: Solve for x
    x = 175,596,578,931.69/438,318.30
  6. Step 6: Final answer
    x = 400,614.30

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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.