Home / 286,670.10-429,875.55-128,817.30

Finding the Fourth Proportional to 286,670.10, 429,875.55 and 128,817.30

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Solution

The fourth proportional to 286,670.10, 429,875.55 and 128,817.30 is: 193,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,670.10 : 429,875.55 = 128,817.30 : x
  2. Step 2: Convert to fraction form
    286,670.10/429,875.55 = 128,817.30/x
  3. Step 3: Cross multiply
    286,670.10x = 429,875.55 × 128,817.30
  4. Step 4: Simplify right side
    286,670.10x = 55,375,407,687.02
  5. Step 5: Solve for x
    x = 55,375,407,687.02/286,670.10
  6. Step 6: Final answer
    x = 193,167.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.