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Finding the Fourth Proportional to 255,431.95, 352,482.24 and 140,688.27

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Solution

The fourth proportional to 255,431.95, 352,482.24 and 140,688.27 is: 194,142.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,431.95 : 352,482.24 = 140,688.27 : x
  2. Step 2: Convert to fraction form
    255,431.95/352,482.24 = 140,688.27/x
  3. Step 3: Cross multiply
    255,431.95x = 352,482.24 × 140,688.27
  4. Step 4: Simplify right side
    255,431.95x = 49,590,114,788.91
  5. Step 5: Solve for x
    x = 49,590,114,788.91/255,431.95
  6. Step 6: Final answer
    x = 194,142.18

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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.