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Finding the Fourth Proportional to 499,485.40, 749,228.10 and 162,557.80

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Solution

The fourth proportional to 499,485.40, 749,228.10 and 162,557.80 is: 243,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,485.40 : 749,228.10 = 162,557.80 : x
  2. Step 2: Convert to fraction form
    499,485.40/749,228.10 = 162,557.80/x
  3. Step 3: Cross multiply
    499,485.40x = 749,228.10 × 162,557.80
  4. Step 4: Simplify right side
    499,485.40x = 121,792,871,634.18
  5. Step 5: Solve for x
    x = 121,792,871,634.18/499,485.40
  6. Step 6: Final answer
    x = 243,836.70

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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.