Home / 256,070.12-384,167.48-85,291.40

Finding the Fourth Proportional to 256,070.12, 384,167.48 and 85,291.40

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Solution

The fourth proportional to 256,070.12, 384,167.48 and 85,291.40 is: 127,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,070.12 : 384,167.48 = 85,291.40 : x
  2. Step 2: Convert to fraction form
    256,070.12/384,167.48 = 85,291.40/x
  3. Step 3: Cross multiply
    256,070.12x = 384,167.48 × 85,291.40
  4. Step 4: Simplify right side
    256,070.12x = 32,766,182,737.63
  5. Step 5: Solve for x
    x = 32,766,182,737.63/256,070.12
  6. Step 6: Final answer
    x = 127,957.86

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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.