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Finding the Fourth Proportional to 140,487.84, 210,731.76 and 46,994.40

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Solution

The fourth proportional to 140,487.84, 210,731.76 and 46,994.40 is: 70,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,487.84 : 210,731.76 = 46,994.40 : x
  2. Step 2: Convert to fraction form
    140,487.84/210,731.76 = 46,994.40/x
  3. Step 3: Cross multiply
    140,487.84x = 210,731.76 × 46,994.40
  4. Step 4: Simplify right side
    140,487.84x = 9,903,212,622.14
  5. Step 5: Solve for x
    x = 9,903,212,622.14/140,487.84
  6. Step 6: Final answer
    x = 70,491.60

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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.