Home / 280,077.58-386,397.03-172,460.98

Finding the Fourth Proportional to 280,077.58, 386,397.03 and 172,460.98

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Solution

The fourth proportional to 280,077.58, 386,397.03 and 172,460.98 is: 237,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,077.58 : 386,397.03 = 172,460.98 : x
  2. Step 2: Convert to fraction form
    280,077.58/386,397.03 = 172,460.98/x
  3. Step 3: Cross multiply
    280,077.58x = 386,397.03 × 172,460.98
  4. Step 4: Simplify right side
    280,077.58x = 66,638,410,462.89
  5. Step 5: Solve for x
    x = 66,638,410,462.89/280,077.58
  6. Step 6: Final answer
    x = 237,928.40

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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.