Home / 315,142.90-434,886.44-187,816.18

Finding the Fourth Proportional to 315,142.90, 434,886.44 and 187,816.18

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Solution

The fourth proportional to 315,142.90, 434,886.44 and 187,816.18 is: 259,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,142.90 : 434,886.44 = 187,816.18 : x
  2. Step 2: Convert to fraction form
    315,142.90/434,886.44 = 187,816.18/x
  3. Step 3: Cross multiply
    315,142.90x = 434,886.44 × 187,816.18
  4. Step 4: Simplify right side
    315,142.90x = 81,678,709,894.60
  5. Step 5: Solve for x
    x = 81,678,709,894.60/315,142.90
  6. Step 6: Final answer
    x = 259,179.91

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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.