Home / 280,429.32-387,001.62-153,114.60

Finding the Fourth Proportional to 280,429.32, 387,001.62 and 153,114.60

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Solution

The fourth proportional to 280,429.32, 387,001.62 and 153,114.60 is: 211,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,429.32 : 387,001.62 = 153,114.60 : x
  2. Step 2: Convert to fraction form
    280,429.32/387,001.62 = 153,114.60/x
  3. Step 3: Cross multiply
    280,429.32x = 387,001.62 × 153,114.60
  4. Step 4: Simplify right side
    280,429.32x = 59,255,598,245.65
  5. Step 5: Solve for x
    x = 59,255,598,245.65/280,429.32
  6. Step 6: Final answer
    x = 211,303.15

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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.