Home / 280,837.28-387,555.40-153,513.36

Finding the Fourth Proportional to 280,837.28, 387,555.40 and 153,513.36

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Solution

The fourth proportional to 280,837.28, 387,555.40 and 153,513.36 is: 211,848.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,837.28 : 387,555.40 = 153,513.36 : x
  2. Step 2: Convert to fraction form
    280,837.28/387,555.40 = 153,513.36/x
  3. Step 3: Cross multiply
    280,837.28x = 387,555.40 × 153,513.36
  4. Step 4: Simplify right side
    280,837.28x = 59,494,931,640.14
  5. Step 5: Solve for x
    x = 59,494,931,640.14/280,837.28
  6. Step 6: Final answer
    x = 211,848.41

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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.