Home / 280,775.60-387,470.36-153,451.16

Finding the Fourth Proportional to 280,775.60, 387,470.36 and 153,451.16

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Solution

The fourth proportional to 280,775.60, 387,470.36 and 153,451.16 is: 211,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,775.60 : 387,470.36 = 153,451.16 : x
  2. Step 2: Convert to fraction form
    280,775.60/387,470.36 = 153,451.16/x
  3. Step 3: Cross multiply
    280,775.60x = 387,470.36 × 153,451.16
  4. Step 4: Simplify right side
    280,775.60x = 59,457,776,207.62
  5. Step 5: Solve for x
    x = 59,457,776,207.62/280,775.60
  6. Step 6: Final answer
    x = 211,762.62

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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.