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Finding the Fourth Proportional to 387,341.34, 579,228.36 and 368,445.66

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Solution

The fourth proportional to 387,341.34, 579,228.36 and 368,445.66 is: 550,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,341.34 : 579,228.36 = 368,445.66 : x
  2. Step 2: Convert to fraction form
    387,341.34/579,228.36 = 368,445.66/x
  3. Step 3: Cross multiply
    387,341.34x = 579,228.36 × 368,445.66
  4. Step 4: Simplify right side
    387,341.34x = 213,414,175,390.92
  5. Step 5: Solve for x
    x = 213,414,175,390.92/387,341.34
  6. Step 6: Final answer
    x = 550,971.85

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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.