Home / 280,752.09-387,438.04-153,427.68

Finding the Fourth Proportional to 280,752.09, 387,438.04 and 153,427.68

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Solution

The fourth proportional to 280,752.09, 387,438.04 and 153,427.68 is: 211,730.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,752.09 : 387,438.04 = 153,427.68 : x
  2. Step 2: Convert to fraction form
    280,752.09/387,438.04 = 153,427.68/x
  3. Step 3: Cross multiply
    280,752.09x = 387,438.04 × 153,427.68
  4. Step 4: Simplify right side
    280,752.09x = 59,443,719,812.73
  5. Step 5: Solve for x
    x = 59,443,719,812.73/280,752.09
  6. Step 6: Final answer
    x = 211,730.29

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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.