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Finding the Fourth Proportional to 418,989.66, 578,200.10 and 228,002.60

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Solution

The fourth proportional to 418,989.66, 578,200.10 and 228,002.60 is: 314,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,989.66 : 578,200.10 = 228,002.60 : x
  2. Step 2: Convert to fraction form
    418,989.66/578,200.10 = 228,002.60/x
  3. Step 3: Cross multiply
    418,989.66x = 578,200.10 × 228,002.60
  4. Step 4: Simplify right side
    418,989.66x = 131,831,122,089.25
  5. Step 5: Solve for x
    x = 131,831,122,089.25/418,989.66
  6. Step 6: Final answer
    x = 314,640.51

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1.5x scale

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.