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Finding the Fourth Proportional to 387,203.95, 580,674.93 and 147,260.86

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Solution

The fourth proportional to 387,203.95, 580,674.93 and 147,260.86 is: 220,841.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,203.95 : 580,674.93 = 147,260.86 : x
  2. Step 2: Convert to fraction form
    387,203.95/580,674.93 = 147,260.86/x
  3. Step 3: Cross multiply
    387,203.95x = 580,674.93 × 147,260.86
  4. Step 4: Simplify right side
    387,203.95x = 85,510,689,572.24
  5. Step 5: Solve for x
    x = 85,510,689,572.24/387,203.95
  6. Step 6: Final answer
    x = 220,841.47

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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.