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Finding the Fourth Proportional to 418,978.02, 578,088.85 and 246,903.02

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Solution

The fourth proportional to 418,978.02, 578,088.85 and 246,903.02 is: 340,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,978.02 : 578,088.85 = 246,903.02 : x
  2. Step 2: Convert to fraction form
    418,978.02/578,088.85 = 246,903.02/x
  3. Step 3: Cross multiply
    418,978.02x = 578,088.85 × 246,903.02
  4. Step 4: Simplify right side
    418,978.02x = 142,731,882,893.33
  5. Step 5: Solve for x
    x = 142,731,882,893.33/418,978.02
  6. Step 6: Final answer
    x = 340,666.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.