Home / 280,763.47-387,480.27-153,458.20

Finding the Fourth Proportional to 280,763.47, 387,480.27 and 153,458.20

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Solution

The fourth proportional to 280,763.47, 387,480.27 and 153,458.20 is: 211,786.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,763.47 : 387,480.27 = 153,458.20 : x
  2. Step 2: Convert to fraction form
    280,763.47/387,480.27 = 153,458.20/x
  3. Step 3: Cross multiply
    280,763.47x = 387,480.27 × 153,458.20
  4. Step 4: Simplify right side
    280,763.47x = 59,462,024,769.71
  5. Step 5: Solve for x
    x = 59,462,024,769.71/280,763.47
  6. Step 6: Final answer
    x = 211,786.90

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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.