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Finding the Fourth Proportional to 286,654.60, 429,981.90 and 73,422.10

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Solution

The fourth proportional to 286,654.60, 429,981.90 and 73,422.10 is: 110,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,654.60 : 429,981.90 = 73,422.10 : x
  2. Step 2: Convert to fraction form
    286,654.60/429,981.90 = 73,422.10/x
  3. Step 3: Cross multiply
    286,654.60x = 429,981.90 × 73,422.10
  4. Step 4: Simplify right side
    286,654.60x = 31,570,174,059.99
  5. Step 5: Solve for x
    x = 31,570,174,059.99/286,654.60
  6. Step 6: Final answer
    x = 110,133.15

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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.