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Finding the Fourth Proportional to 407,486.04, 611,090.60 and 141,184.40

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Solution

The fourth proportional to 407,486.04, 611,090.60 and 141,184.40 is: 211,728.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,486.04 : 611,090.60 = 141,184.40 : x
  2. Step 2: Convert to fraction form
    407,486.04/611,090.60 = 141,184.40/x
  3. Step 3: Cross multiply
    407,486.04x = 611,090.60 × 141,184.40
  4. Step 4: Simplify right side
    407,486.04x = 86,276,459,706.64
  5. Step 5: Solve for x
    x = 86,276,459,706.64/407,486.04
  6. Step 6: Final answer
    x = 211,728.63

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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.