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Finding the Fourth Proportional to 255,356.65, 352,378.48 and 140,612.89

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Solution

The fourth proportional to 255,356.65, 352,378.48 and 140,612.89 is: 194,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,356.65 : 352,378.48 = 140,612.89 : x
  2. Step 2: Convert to fraction form
    255,356.65/352,378.48 = 140,612.89/x
  3. Step 3: Cross multiply
    255,356.65x = 352,378.48 × 140,612.89
  4. Step 4: Simplify right side
    255,356.65x = 49,548,953,981.65
  5. Step 5: Solve for x
    x = 49,548,953,981.65/255,356.65
  6. Step 6: Final answer
    x = 194,038.24

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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.