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Finding the Fourth Proportional to 320,671.98, 442,520.51 and 175,477.18

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Solution

The fourth proportional to 320,671.98, 442,520.51 and 175,477.18 is: 242,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,671.98 : 442,520.51 = 175,477.18 : x
  2. Step 2: Convert to fraction form
    320,671.98/442,520.51 = 175,477.18/x
  3. Step 3: Cross multiply
    320,671.98x = 442,520.51 × 175,477.18
  4. Step 4: Simplify right side
    320,671.98x = 77,652,251,520.77
  5. Step 5: Solve for x
    x = 77,652,251,520.77/320,671.98
  6. Step 6: Final answer
    x = 242,154.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.