Home / 315,134.90-434,875.41-187,808.18

Finding the Fourth Proportional to 315,134.90, 434,875.41 and 187,808.18

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Solution

The fourth proportional to 315,134.90, 434,875.41 and 187,808.18 is: 259,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,134.90 : 434,875.41 = 187,808.18 : x
  2. Step 2: Convert to fraction form
    315,134.90/434,875.41 = 187,808.18/x
  3. Step 3: Cross multiply
    315,134.90x = 434,875.41 × 187,808.18
  4. Step 4: Simplify right side
    315,134.90x = 81,673,159,278.85
  5. Step 5: Solve for x
    x = 81,673,159,278.85/315,134.90
  6. Step 6: Final answer
    x = 259,168.88

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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.