Home / 280,971.46-387,740.44-153,647.05

Finding the Fourth Proportional to 280,971.46, 387,740.44 and 153,647.05

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Solution

The fourth proportional to 280,971.46, 387,740.44 and 153,647.05 is: 212,032.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,971.46 : 387,740.44 = 153,647.05 : x
  2. Step 2: Convert to fraction form
    280,971.46/387,740.44 = 153,647.05/x
  3. Step 3: Cross multiply
    280,971.46x = 387,740.44 × 153,647.05
  4. Step 4: Simplify right side
    280,971.46x = 59,575,174,771.70
  5. Step 5: Solve for x
    x = 59,575,174,771.70/280,971.46
  6. Step 6: Final answer
    x = 212,032.83

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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.