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Finding the Fourth Proportional to 426,185.01, 639,381.60 and 141,875.01

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Solution

The fourth proportional to 426,185.01, 639,381.60 and 141,875.01 is: 212,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,185.01 : 639,381.60 = 141,875.01 : x
  2. Step 2: Convert to fraction form
    426,185.01/639,381.60 = 141,875.01/x
  3. Step 3: Cross multiply
    426,185.01x = 639,381.60 × 141,875.01
  4. Step 4: Simplify right side
    426,185.01x = 90,712,270,893.82
  5. Step 5: Solve for x
    x = 90,712,270,893.82/426,185.01
  6. Step 6: Final answer
    x = 212,847.16

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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.