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Finding the Fourth Proportional to 257,037.60, 385,556.40 and 239,541.60

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Solution

The fourth proportional to 257,037.60, 385,556.40 and 239,541.60 is: 359,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,037.60 : 385,556.40 = 239,541.60 : x
  2. Step 2: Convert to fraction form
    257,037.60/385,556.40 = 239,541.60/x
  3. Step 3: Cross multiply
    257,037.60x = 385,556.40 × 239,541.60
  4. Step 4: Simplify right side
    257,037.60x = 92,356,796,946.24
  5. Step 5: Solve for x
    x = 92,356,796,946.24/257,037.60
  6. Step 6: Final answer
    x = 359,312.40

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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.