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Finding the Fourth Proportional to 465,457.02, 698,171.55 and 128,518.21

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Solution

The fourth proportional to 465,457.02, 698,171.55 and 128,518.21 is: 192,773.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,457.02 : 698,171.55 = 128,518.21 : x
  2. Step 2: Convert to fraction form
    465,457.02/698,171.55 = 128,518.21/x
  3. Step 3: Cross multiply
    465,457.02x = 698,171.55 × 128,518.21
  4. Step 4: Simplify right side
    465,457.02x = 89,727,757,878.93
  5. Step 5: Solve for x
    x = 89,727,757,878.93/465,457.02
  6. Step 6: Final answer
    x = 192,773.45

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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.