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Finding the Fourth Proportional to 368,385.63, 508,186.08 and 215,323.83

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Solution

The fourth proportional to 368,385.63, 508,186.08 and 215,323.83 is: 297,038.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,385.63 : 508,186.08 = 215,323.83 : x
  2. Step 2: Convert to fraction form
    368,385.63/508,186.08 = 215,323.83/x
  3. Step 3: Cross multiply
    368,385.63x = 508,186.08 × 215,323.83
  4. Step 4: Simplify right side
    368,385.63x = 109,424,573,098.29
  5. Step 5: Solve for x
    x = 109,424,573,098.29/368,385.63
  6. Step 6: Final answer
    x = 297,038.11

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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.