Home / 280,244.40-386,626.18-172,627.80

Finding the Fourth Proportional to 280,244.40, 386,626.18 and 172,627.80

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Solution

The fourth proportional to 280,244.40, 386,626.18 and 172,627.80 is: 238,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,244.40 : 386,626.18 = 172,627.80 : x
  2. Step 2: Convert to fraction form
    280,244.40/386,626.18 = 172,627.80/x
  3. Step 3: Cross multiply
    280,244.40x = 386,626.18 × 172,627.80
  4. Step 4: Simplify right side
    280,244.40x = 66,742,426,875.80
  5. Step 5: Solve for x
    x = 66,742,426,875.80/280,244.40
  6. Step 6: Final answer
    x = 238,157.93

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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.