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Finding the Fourth Proportional to 439,056.40, 657,029.40 and 299,088.40

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Solution

The fourth proportional to 439,056.40, 657,029.40 and 299,088.40 is: 447,573.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,056.40 : 657,029.40 = 299,088.40 : x
  2. Step 2: Convert to fraction form
    439,056.40/657,029.40 = 299,088.40/x
  3. Step 3: Cross multiply
    439,056.40x = 657,029.40 × 299,088.40
  4. Step 4: Simplify right side
    439,056.40x = 196,509,871,998.96
  5. Step 5: Solve for x
    x = 196,509,871,998.96/439,056.40
  6. Step 6: Final answer
    x = 447,573.19

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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.