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Finding the Fourth Proportional to 442,438.80, 663,755.40 and 142,868.40

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Solution

The fourth proportional to 442,438.80, 663,755.40 and 142,868.40 is: 214,333.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,438.80 : 663,755.40 = 142,868.40 : x
  2. Step 2: Convert to fraction form
    442,438.80/663,755.40 = 142,868.40/x
  3. Step 3: Cross multiply
    442,438.80x = 663,755.40 × 142,868.40
  4. Step 4: Simplify right side
    442,438.80x = 94,829,671,989.36
  5. Step 5: Solve for x
    x = 94,829,671,989.36/442,438.80
  6. Step 6: Final answer
    x = 214,333.99

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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.