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Finding the Fourth Proportional to 342,008.10, 512,234.55 and 216,036.90

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Solution

The fourth proportional to 342,008.10, 512,234.55 and 216,036.90 is: 323,564.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,008.10 : 512,234.55 = 216,036.90 : x
  2. Step 2: Convert to fraction form
    342,008.10/512,234.55 = 216,036.90/x
  3. Step 3: Cross multiply
    342,008.10x = 512,234.55 × 216,036.90
  4. Step 4: Simplify right side
    342,008.10x = 110,661,564,254.90
  5. Step 5: Solve for x
    x = 110,661,564,254.90/342,008.10
  6. Step 6: Final answer
    x = 323,564.16

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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.