Home / 280,988.55-387,764.06-153,664.20

Finding the Fourth Proportional to 280,988.55, 387,764.06 and 153,664.20

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Solution

The fourth proportional to 280,988.55, 387,764.06 and 153,664.20 is: 212,056.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,988.55 : 387,764.06 = 153,664.20 : x
  2. Step 2: Convert to fraction form
    280,988.55/387,764.06 = 153,664.20/x
  3. Step 3: Cross multiply
    280,988.55x = 387,764.06 × 153,664.20
  4. Step 4: Simplify right side
    280,988.55x = 59,585,453,300.33
  5. Step 5: Solve for x
    x = 59,585,453,300.33/280,988.55
  6. Step 6: Final answer
    x = 212,056.52

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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.