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Finding the Fourth Proportional to 387,070.41, 580,605.67 and 120,853.73

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Solution

The fourth proportional to 387,070.41, 580,605.67 and 120,853.73 is: 181,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,070.41 : 580,605.67 = 120,853.73 : x
  2. Step 2: Convert to fraction form
    387,070.41/580,605.67 = 120,853.73/x
  3. Step 3: Cross multiply
    387,070.41x = 580,605.67 × 120,853.73
  4. Step 4: Simplify right side
    387,070.41x = 70,168,363,297.71
  5. Step 5: Solve for x
    x = 70,168,363,297.71/387,070.41
  6. Step 6: Final answer
    x = 181,280.62

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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.