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Finding the Fourth Proportional to 887,261.60, 1,330,892.40 and 256,239.20

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Solution

The fourth proportional to 887,261.60, 1,330,892.40 and 256,239.20 is: 384,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,261.60 : 1,330,892.40 = 256,239.20 : x
  2. Step 2: Convert to fraction form
    887,261.60/1,330,892.40 = 256,239.20/x
  3. Step 3: Cross multiply
    887,261.60x = 1,330,892.40 × 256,239.20
  4. Step 4: Simplify right side
    887,261.60x = 341,026,803,862.08
  5. Step 5: Solve for x
    x = 341,026,803,862.08/887,261.60
  6. Step 6: Final answer
    x = 384,358.80

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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.