Home / 280,756.47-387,444.09-153,432.06

Finding the Fourth Proportional to 280,756.47, 387,444.09 and 153,432.06

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Solution

The fourth proportional to 280,756.47, 387,444.09 and 153,432.06 is: 211,736.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,756.47 : 387,444.09 = 153,432.06 : x
  2. Step 2: Convert to fraction form
    280,756.47/387,444.09 = 153,432.06/x
  3. Step 3: Cross multiply
    280,756.47x = 387,444.09 × 153,432.06
  4. Step 4: Simplify right side
    280,756.47x = 59,446,344,863.53
  5. Step 5: Solve for x
    x = 59,446,344,863.53/280,756.47
  6. Step 6: Final answer
    x = 211,736.33

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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.