Home / 280,435.37-387,001.80-153,113.09

Finding the Fourth Proportional to 280,435.37, 387,001.80 and 153,113.09

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Solution

The fourth proportional to 280,435.37, 387,001.80 and 153,113.09 is: 211,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,435.37 : 387,001.80 = 153,113.09 : x
  2. Step 2: Convert to fraction form
    280,435.37/387,001.80 = 153,113.09/x
  3. Step 3: Cross multiply
    280,435.37x = 387,001.80 × 153,113.09
  4. Step 4: Simplify right side
    280,435.37x = 59,255,039,498.55
  5. Step 5: Solve for x
    x = 59,255,039,498.55/280,435.37
  6. Step 6: Final answer
    x = 211,296.60

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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.